c5500 350 to 6.2 swap

[rdauphinais]

Hey everyone, I will be buying the 72' C5500 as soon as my car sells. It has a 350 Chevy in it backed by the sm465, and my buddy has a 6.2 diesel for little to nothing. This isn't my first time around the 6.2's and 6.5's, i know they are no power house, but thats fine. What i need to know is what will I need to swap the two? Will the flywheel off the 350 bolt up to the 6.2? And il have to run a separate g.p. relay system.