Tuner builds world's fastest Bentley

German tuner MTM has put together a kit for the Bentley Continental GT that pushes output to 650 horsepower. The first component of the kit is a software upgrade that enables the engine to reach 635 horsepower. Further mechanical upgrades inch output up to 650 horses and 780 Nm of torque. Zero to 62 mph takes just 4.2 seconds and top speed is over 206 mph. Other upgrades include 21 inch alloy wheels, 10.5 inch wide Dunlop tires, and giant 412x38 front brakes. Gallery after the jump...