He has an SL man just incase you misunderstood and thought he had a SR.Jspec said:you can just turbo your engine. since you have the 4 wheel drive already. i think that's what you should aim for since weight is obviously not in your favor due to the heavier driveshafts you are carrying.
on the other hand? how fast does the GTO SR run anyway? do you have a 0-400M timeslip figure anywhere? did you try to time yourself. how does it stack up against the competition?
how much does the car weight?