I did a search on this & couldn't find an answer, and I'd like to figure this out before hitting the salvage yards. I'm working on a conversion of a 1979 full size Jimmy to a 6.2 diesel. I've swapped in the complete engine, transmission (TH400) and transfer case (NP208) out of a military CUCV Blazer. The issue I have is with the rear axle yoke and the driveshaft I pulled from a '86 Blazer (needed the slip yoke driveshaft for the NP208). The rear axle is a Corp 12 Bolt and the rear u-joint on the '86 driveshaft is much larger and wider than what came originally with the Jimmy. Question is, can I swap in a yoke out of an early '80s 1/2 ton pickup/Blazer/Suburban into the 12 bolt rear end that is currently in the Jimmy. Also what rear end form an early '80s 1/2 ton pickup/Blazer/Suburban will work? Corp 10 Bolt, 12 Bolt, etc.?