Welcome to the Station TJ! Let's get some pics of your 92 up. As for a diesel V8, go for a Duramax 6.6L or maybe a Cummins 5.9L straight six. Both are fantastic engines, and let's face the facts people, and I know I'm gonna get flak for this, but Chevy and Dodge make better diesels. Both can make fantastic power with just a few bolt ons. Be sure to get HEAVY DUTY engine mounts so you don't overwhelm the truck with the weight of the engine, and compensate for the extra weight with a set of heavy duty springs in the front and an alignment. Good luck on your build and once again, welcome!