5.7 Hemi

Just scored a 2010 dodge 1500 5.7 Hemi from a good friend of mine with 15k for 700! Got a 46rh transmission laying around, thinking about building it up and going manual valve body on it. Is it a good transmission for the genIII? Plan now is to throw in my 71 Powerwagon. Which sucks cause got the slant 6 turbo running smooth. Which I’ll sell off to help fund. I’ve always wanted a old rig with reliability, which here is my chance. I guess what I’m trying to ask, is this an easy conversion? I’ve seen plenty of standalone harnesses and engine mounts that will work.