Another Toyota badged car to be showcased at the 2010 SEMA Show is the Yaris GT-S Club Racer which wants to demonstrate that the automaker’s sub-compact, fuel efficient model can be transformed into a capable race car.
Starting with the exterior, the Toyota Yaris GT-S Club Racer features Molly Designs graphics, a carbon fiber hood and hatchback, hood pins, fender flairs, tow hooks and Lexan side and rear windows.
The Toyota Yaris GT-S Club Racer uses 13 inch three-piece racing wheels wrapped in Goodyear slick racing tires, while the interior has been stripped of pretty much everything, and now features a race data acquisition dash system, a race seat, Sparco race pedals, a 6-point harness, roll cage and various other features that are expected to get used by the driver during racing.
The Toyota Yaris GT-S Club Racer uses a 1.5-litre VVT-i engine which develops 145 bhp @ 7,252 rpm and comes with a custom suspension featuring custom dampers, plus an adjustable sway bar. 
In depth information regarding the Toyota Yaris GT-S Club Racer is available in the press release below.
Toyota press release :
2010 SEMA Show: Yaris GT-S Club Racer
The Toyota Yaris is well-known as a value-driven sub-compact car with proven reliability and excellent fuel efficiency.  It has also proven in past SEMA shows to be very versatile when it comes to customization.  The little sub-compact returns to the 2010 SEMA Show, this time proving it can also be converted into a very capable race car.
To make the Yaris racecar a reality Toyota Motor Sales, U.S.A., Inc. asked SportsCar  magazine to convert a 2006 Yaris five-door liftback.  The Yaris selected for the project was a veteran of the 2007 SEMA Show, formerly known as the Yaris Club project.  Toyota renamed the car the GT-S Club Racer as an homage to the popular GT-S grade Celica’s of the 1980’s and 90’s.  SportsCar magazine accepted the challenge and began remaking the Yaris into a Sports Car Club of America (SCCA) sanctioned racecar.  
SportsCar magazine began the project by shedding nearly 400 pounds off the vehicle’s curb weight by removing several creature comforts like the air conditioning and audio system to tip the scale at less than the 1,900 pound class minimum.
The exterior of the Yaris GT-S Club Racer features a Molly Designs inspired graphics that pays homage to Dan Gurney’s All American Racers-built IMSA GTP Toyota Eagle Racers of the 1990’s. Additional exterior features include a Seibon carbon fiber hood and hatchback, AeroCatch hood pins, Racing Lifestyle fender flares, I/O Port Racing Supplies tow hooks, and Lexan side and rear windows.  The Yaris rides on three-piece JRW330 13 x 7 Jongbloed Racing wheels wrapped with Goodyear Eagle Sports Car Special 20.0 x 9.5-13 racing slicks.
Underneath the hood is a Toyota 1.5-liter four-cylinder engine with VVT-i.  SportsCar magazine made several modifications to increase the horsepower from the stock 106 to 145 @ 7252 RPM.  Modifications included several bolt-on performance parts including a K&N air intake, a DC Sports header, and Rebello Racing Engines camshafts and cylinder head work to name a few.  A Mishimoto radiator and Coast Fabrication Ultra Lightweight racing muffler were also added.  The engine is mated to a SPEC aluminum flywheel and three-puck clutch, a Kaaz limited slip differential and a 4.312 final drive gear set swapped in from a Scion xB.
To help slow the car Carbotech XP-8 brake pads and Goodridge stainless steel brake lines were added.
Modifications on the inside included an AiM Sports MXL race data acquisition dash system paired with an AEM Performance Electronics EMS Series 2 ECU, for complete control of the engine and data accumulation.  Safety was addressed with a Sparco Evo 2 FIA race seat and race pedals while Autopower supplied a Pro-Cam six-point harness and window net.  Additional safety features include an NRG Innovations steering wheel with a quick release hub, a Braille No-Weight battery, Longacre kill switch and mirrors, and an Emergency Suppressions Systems fire system.
Once completed, it was time to race.  The Yaris GT-S Club Racer won its very first race, topping the competition at Willow Springs Raceway in Southern California.  Driven by SportsCar magazine associate editor Jason Isley, the little racecar went on to win the Southern Pacific H Production Division Championship.  Capturing its division qualified the Yaris for the 47th SCCA National Championship Runoffs at the historic Road America circuit in Elkhart Lake, Wisconsin where it competed in late September.  At the championships, it qualified 13th and finished a very respectable 8th out of a field of 26.  Competing against older classics, it was the newest car in the field by 19 years!
After the SEMA Show, Toyota and Sony Computer Entertainment America LLC, will host the producers of Gran Turismo® 5 at a race track where they will compare their “virtual” racing skills versus their “actual” racing skills by driving the GT-S Club Racer in a time trial format.
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Yaris GT-S Club Racer Features
Molly Designs inspired graphics
Seibon carbon fiber hood and hatchback
AeroCatch hood pins
Racing Lifestyle fender flares
I/O Port Racing Supplies tow hooks
Lexan side and rear windows
Goodyear Eagle Sports Car Special 20.0×9.5-13 Racing Slick
Jongbloed Racing Wheels three-piece JRW330 13×7
AiM Sports MXL race data acquisition dash system
Sparco Evo 2 FIA race seat
Sparco race pedals
NRG Innovations steering wheel with quick release hub
Autopower Pro-Cam 6-point harness
Autopower window net
Braille No-Weight battery
Longacre kill switch
Longacre mirrors
Emergency Suppression Systems fire system
AST Suspension – USA custom 5100 series dampers
Eibach ERS springs 550lbs front/650lbs rear
Whiteline adjustable rear swaybar
Carbotech XP-8 pads
Goodridge stainless steel brake lines
Toyota 1NZ-FE 1.5 liter with VVT-i 145hp@7252rpm
Rebello Racing Engines camshafts and cylinder head work
AEM Electronics EMS Series 2
AEM Electronics UEGO wideband O2
MP Tuning custom harness
Church Automotive Testing tune
Okada Projects USA Plasma Direct Coils
K&N Air Intake
DC Sports header
Coast Fabrication Ultra Lightweight Racing Muffler
Mishimoto radiator
Pure Power 10W-20 racing oil
Pure Power Lifetime Oil Filter
SPEC aluminum flywheel and three-puck clutch
Kaaz limited slip differential
Scion xB final drive swap (4.312)
Participating Suppliers:
AiM Sports:
AEM Electronics:
AST Suspension – USA:
Beta Motorsports:
Braille Battery:
Church Automotive Testing: (310) 518-4966
Coast Fabrication:
Emergency Suppression Systems:
Fast Lane Racing School:
Garage Graffix:
Hiro’s Auto Repair:
I/O Port Racing Supplies:
Jongbloed Racing Wheels:
MP Tuning:
NRG Inovations:
Okada Projects USA:
Pure Power:
Racing Lifestyle:
Rebello Racing:
Tire Rack:
Toyota Racing Development:

Source: Toyota