slammed94ranger
+1y
Cummins would be the way to go if you are going to swap. Search around. There is a guy that makes bolt in kits for the 73-87 body style and I think he also makes them for the 88-98 body style.
If you do the swap you need to swap engine, tranny, wiring harness, fuel lines, fuel tank(s), etc. Nothing from a gas engine will work, and I mean NOTHING.