Sorry to disapoint you but I have gone conservitive with a Rover / Buick 3500 V8, Cam and 4 twin choke down drafts just so that it will make the right noise. I should have about 240 / 250 hp in 650kg (1300lb) of car thru an Audi 013 transaxle, That means it has the same power to weight as my brothers Viper. 500hp to 2700lb and thats enough.