I've got a '90 SC AOD. It will be pretty much stock, except a few free things and maybe exhuast. I've got a set of new 3.73 gears that we had for a Mustang 8.8". I do believe they will work in the SC(correct me if I'm wrong). I'm just wondering, if all I did was the gears, how MUCH it will improve 1/4 mile ET. Thanks