While many are sitting back, patiently waiting for the arrival of the BMW M6, German tuner Alpina has been hard at work on a project that will shed some light on the future model. Their new B6 Biturbo Coupe may not be as impressive as the upcoming M6, which is rumored to deliver about 600 HP, but it’s here now. Plus, we’re sure Alpina left enough room for a new tuning package for the M6.But back to their Alpina B6 Biturbo Coupe. The B6 is an evolution of the old 507 HP B6 cabrio, but uses an aluminum twin-turbo 4.4-liter V8, equipped with MAHLE pistons and a high-performance cooling system. This setup is give for a total output of 540 HP and 516 lb-ft of torque. With the extra power, the B6 Biturbo will sprint from 0 to 60 mph in 4.4 seconds and will hit a top speed of 198 mph. Alpina has also opted for a Akrapovic titanium exhaust system that will make the car sound better than ever and, of course, a new set of 20\" Alpina Classic rims fitted with Michelin Pilot Super Sport tires.For the aerodynamic updates, the B6 BiTurbo Coupe has been fitted with a front spoiler, an integrated carbon fiber front splitter, and a rear spoiler with an optional rear wing. The interior was also revamped with a sport steering wheel, hand-stitched in LAVALINA leather, blue illuminated entry sills, a navigation system with preparation for Bluetooth mobile phone, USB audio interface, Xenon lights, and LED fog lights.