727 Tail Swap

NO. Use the gears from the short one. To simplify, when you take the trans apart,and get back to the clip on the front of the output shaft, use everything from there back from the short one into the 76. Re-use the pump and front drums from the 76; everything in front of the clip. Plus of course, use the 76 valve body and kickdown arm. Forget about a shift kit for now.