Swiss tuner Sportec has prepared an upgrade package named the SP580 for the facelift version 2010 Porsche 911 Turbo.
At the exterior the German sports car received a number of discrete elements like the new optimized front spoiler, side sills, the larger tail plane, carbon fiber exterior mirrors and air intakes plus the 20 inch forged wheels.   
Inside the Sportec 2010 Porsche 911 Turbo customers will find aluminium pedals and foot rests as well as bucket seats. The car’s height has been lowered by 20 mm and for those that want to take their Sportec 2010 Porsche 911 Turbo to the track the is the PASM compatible super sports suspension that can be individually adjusted.
As far as performance specs the Sportec 2010 Porsche 911 Turbo packs 580 PS and 650 Nm of torque that enable 3.2 seconds 0 to 100 Km/h acceleration and a maximum speed of 323 Km/h. 
Sportec press release :
Sportec 997 Turbo SP580: For daily driving enjoyment
With the new SP580 Sportec is once more prowling in the stomping ground of the super sports car. True to the sporty understatement Sportec the Porsche 997 turbo is a real leopard in wolf’s clothing – this is
ensured by the full 580 PS and powerful 650 Nm torque that can be had at just 1.950-5.000 revs. Thus equipped the Sportec SP580 achieves the standard spring from 0 to 100 km/h in only 3.2 seconds. The occupants of the SP580 are catapulted from 0 to 200 km/h in a breathtaking 10.3 seconds. Only at 323 km/h does the revolution limiter put an end to this flush of speed.
Externally only the powerful Sportec Mono7 forged 20 inch wheels and the completely new aerodynamic package that holds true to the Sportec Motto "more substance, less style", suggest that beholder isn’t looking at a mass production vehicle from Zuffenhausen. An aerodynamically optimised front spoiler, discrete side skirts along with a larger tail plane – as an option also to be had in carbon – both technically and optically complete the SP580.  And if that wasn’t enough the exterior mirrors and the air intakes can be had in matt carbon. The aluminium pedals and foot supports as well as the bucket seats are all further signs of its sportiness. And for those who like it a little sportier there is a lowering set that brings the chassis around 20 millimetres nearer to the tarmac. For use on the race track Sportec offers a special PASM compatible super sports suspension that can be individually adjusted to suit every purpose and all race track conditions.
No. of cylinders                        6 Boxer
Cubic capacity                cc        3800
Bore/stroke                mm        102 x 77.5
Compression ratio                        9.8 : 1
Power                        kW/hp        426/580
At an engine speed of        rpm        6150
Torque                        Nm        650
At an engine speed of        rpm        1950-5000
Fuel requirement                        98 ROZ Super Plus, unleaded

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Manufacturer’s Performance Ratings
0- 100 km/h                s        4.2
0- 200 km/h                s        10.3
Top speed                        km/h        323
Power/weight ratio                kg/hp        2.84
Specific output                hp/L        153
Sportec Data, Alterations in Comparison to the Standard Series
Six Cylinder Aluminium Biturbo
LM Cylinder Head
2 camshafts each
Automatic valve clearance balancing
Engine electronics adjusted for 580hp
self supporting body
Coil springs with special Sportec characteristic, 20 mm lowering
Front spoiler
Rear spoiler made out of PUR-Rim
Wheels and Tyres
Light metal wheels Mono 7 in 20"
Sportec wheels, front        9 x 20"
Sportec wheels, rear                12 x 20"
Tyres                         Michelin PS2
Sportec 6-piston calliper brake with ventilated steel disc at the front axle, 4-piston calliper with ventilated steel discs at the rear axle

Source: Sportec