G Power has taken the old BMW M3 E64 and made it quicker than the new M3.
They achieved that by enhancing the E46’s engine with their SK I "SPORTY DRIVE" supercharger system which enabled the 3.2-litre straight cylinder unit to produce 450 HP and 460 Nm of torque instead of 343 HP and 365 Nm.
As a result the M3 E64 is able to sprint from 0 to 200 Km/h in 14.7 seconds and achieve a limited top speed of 300 Km.
Apart from the power boost, the German tuner has also fitted the old M3 with coilover suspension, a stainless steel muffler, high performance brakes and 20 inch SILVERSTONE DIAMOND wheels wrapped in MICHELIN Pilot Sport tyres (245/30 ZR 20 and 285/25 ZR 20).
If you like this program there here is how much G-Power charges for each upgrade:
the wheel and tire set costs 4,422 Euros, the coilover suspension is 1,205 Euros, the sports muffler is 1,079 Euros, the braking system is 5,800 and 3,860 Euros for the front and rear axle respectively, while the custom supercharger system costs 7,000 Euros plus installation. 

Source: G-Power