Ok my buddy has a 98 Chevy 1ton 4x4 with the 4500 and I love it maybe it’s the 6.5 turbo but I love it. I have to pick up hay today I could of done it in my 94 1/2ton but I just want to drive his 98 lol but anyway I want to put a nv4500 in my 79 k20 it has a sm465 with 203 10 splines I know the nv is like 32 or some other number but what nv could I swap it out with that would require less adapters I got family that has a junk yard so I want to know what to ask for when I call them up