As for a spare engine- if it’s super cheap, so what if it is another gm 6.5. The reason so many of us that have been into the 6.5 world so long is because we used to get $50 running engines. When prices of everything were half what they are now- a fair price for a complete running 6.5 was $250-300. I know a lot of us talk about the wonderful 6.5, but man don’t get it twisted. This engine really is as crappy as WarWagon makes them out to be. They are so crappy people gave away running ones for free often. Now they are just getting rare, snd people have learned if you only invest a couple thousand dollars into fixing these 10 problems it can then be a reliable, long term rig. And if you pour a lot of your own free labor into it and if you bump the money up to 8-10 grand you can make a really good one. Now days to make a great one you have to start with buying a 8 thousand dollar one, and put thousands more into it. And under proper circumstances you can do it all on the cheap- but that is honestly few and far between.