My Dad wants to do some more stuff to his automatic so what gears are you guys running & other mods.
He has all the motor bolt ons like intake CAI etc.
Check their transmission articles for the 4r70w automatic transmission. It is a T-bird and Cougar club, however, the 4r70w is the automatic transmission found in the GT's. Jerry Wroblewski is the one who designed the shift kit, he also was a Ford Engineer who helped design the 4r70w transmission for Ford.