unless youre going to hang the rear suspension off the casing like in a formula ford, I see no point in using a horrifically expensive casing wrapped around an inverted beetle cluster. Personally Id be getting an audi 1.8 turbo engine and transaxle and fitting that. Same basic box layout, 5 speeds, strong, reasonable power, modern engine that doesnt eat valvegear and then design your own suspension like Andy gallaghers multilink of a kitcar style frame made of box with double wishbones tied into the cage.