i want to take my 3dr to 400bhp - 450bhp and i don't know where to start i,e what turbo is needed, cams, injectors, gaskets upgrade etc anything the car will need the car is stg 3 330bhp on a standard turbo the work was done by MSD and i would prefer to start the build from scratch so it can go back there in good order any help and advice would be great. thanks.