so whenever you pull your T-20 and are rebuilding it, take this into consideration. "COOL T-20" so first off put your T-20 on a bench and clean it up good because you will be splitting the cases. on this build i started with a NEW T-20 after WHIPPER did some machine work to it for the laterals. so of course you will need to have all the parts to make it a COOL T-20 , pump, lines, fittings, heavy duty cooler for like oil or trans fluid or similar. try to keep it simple makes for better maintenance latter.