The 6.3 litre conversion give the Virage a 40% increase in power, improve braking and handling. The standard Virage engine has been increased from 330BHP to 500BHP, and the torque has also been increased from 350lb/ft to 480 lb/ft.This has been archived by boring and stroking the standard 5.4 litre V8 to 6.3 litres, reworking and gas-flowing the cylinder head, changing the fuel injection to the Weber/Alpha system and fitting specially manufactured Cosworth pistons., with higher lift camshafts and a high specification crankshaft.The braking system, which includes ABS, incorporates the larger and ventilated and drilled disc to be fitted to a production motor car in conjunction with the motor racing Group C developed calipers.Modifications to the suspension include new road springs and shocker absorber rating with changes to the roll-bar and the wishbone mountings. The 285/45/ZR Goodyear Eagle tyres are on special 18 inc alloy wheels. Bodywork changes include flared wheel arches, a new front spoiler and sill finishers, also a boot spoiler option.The conversion, which was carried out on owners existing Virages by the Aston Martin Service Division, provides a sub 5.5 second acceleration to 60 mph and reduces the 0 -100 MPH time by 5 seconds - all on lead free petrol.