The ones on the modular motors are diff bolt pattern. Are the truck transmissions longer? I will have to swap out the end of the trans for an output shaft from an aod for my driveshaft. From what I read the shaft is 1.5 on aod and1.6 on 4r and I need an early one for the speedometer to work.Yes you're right. But the 4R70W truck transmissions also have the same bolt pattern as the 302's because they came with 302's...