400 manual valve body

[pdzz]

I'm installing a 400 in my 70 GS. I got this in a trade from a friend. It has a manual valve body, and I want to put a normal valve body from one of my core 400's. My question is, other than the valve body and manual valve is there any other changes that need to be made? I'm going to disassemble the tran's and put in a 34 element sprag, check everything else out before I install it. Thanks in advance,Phil.