The B3 GT3 limited edition isn't the only Alpina making its debut at this week's 2011 Tokyo Motor Show as the boutique automaker also brought along the coupe version of its B6 BiTurbo based on the latest BMW 650i.
Alpina has taken BMW's 4.4-liter V8 turbo engine to the next level with a series of upgrades including an intercooled dual turbo system and the addition a new titanium exhaust system developed in conjunction with exhaust specialists Akrapovic, that all help to lift output to 540-horsepower at 5,500 rpm and peak torque to 700Nm (516 lb-ft).
