compatible engine

I recently found a very rusty 1989 Jeep Wrangler with an HO 4.0 Engine. I also own a 1998 Cherokee with a solid body but no oil pressure at idle on a 4.0, HO engine. I was wondering if there are any major differences between the two engines that would make them difficult to swap. I would like...

HI I own a Cherokee pioner 1984 2.5L 4wd It still works, I want to budget how much money do I need to get for convert it as a classic (it means to me, new engine,new electric system, every original piece, like grid, mirrors, new seats, lights etc.) so I can use it in a daily bases. Can...