well,from my point of view and from what i have seen with most of the foot brake cars at our track a 350 turbo is always faster in a heavy car.you can't beat that low first gear to get off the line.i have driven 8 second dragsters and 9 second door cars and a p.g. is a bad ass trans. but put it in a 10.80 car at 3200# and you have a slug....i know of at least 6 pro cars that spent a lot of money on glides and 8" convertors and lost 4-5 tenths.if you have a good intermediate drum and sprag,trans brake that thing and stand that bitch on the back bumper.