Magnum 5.9 into 70s truck

Yeah I know, not an A body but same premise. I have a 72 dodge truck with a dead 360 in it. The truck is equipped with power steering and A/C. I also have a nice, low mile Magnum 360 from a 2001 truck also P/S and A/C. What all would be needed to make the Magnum work in the old truck? I want to use the serpentine belt set up. I'd use a 70s electronic dizzy and a carburetor intake. My main concern is the Alternator wiring? Same balance as the LA 360? Mounts? Anything maybe you've encountered??? Thanks for any help.