tranny swap from sm465 to a nv4500 questions

[Masstowingllc]

Ok ihave a early sm465 tranny Iin my truck right now and I am going to pickup a nv4500 to do a tranny swap I have a 1970 454 engine in front of the muncie sm465 right now!! So my questions are do i need a new bellhousing, clutch, flywheel, pressure plate, pto pump? What are interchangeable from sm465 to nv4500 both trannys are chevy trannys!! I just want to get everything to do the. Swap in one day I can't afford my truck to be down longer then 1 day!!