So I have a 1978 K30 that I was planning on swapping a 5.9 into. I know this is a pretty common swap and have no problems with the physical swapping or compatibility just had a question about the Gen 1 vs Gen 2 Cummins. In my area I am having a really hard time finding a gen 1 5.9 to use for the swap but have a pretty easy time finding gen 2 engines / totaled trucks. I was planning on using a NV4500 for the tranny and was just wondering what I would need to complete the swap as in electronics wise and or any other tips. Don't really mind if I can keep the 4 wheel drive or not. I just know with a gen 1 that its crazy simple on the wiring side, just not to sure how the gen 2 is because I'm assuming I'm going to need a pcm, ecm, or some of those works. I was planning on rebuilding the engine myself (fresh gaskets and just check and fix any clearances) so if there is anything I should do there please let me know. Just kind of curious if I'm worrying too much about what I need for a gen 2 swap or if it's worth it to go out of my way to find a gen 1 to put in it. Thank you.