You definitely should do a search on this topic as it has been discussed ad nauseum. In short, though, anything other than the same engine will require custom fabrication and wiring. It is never easy and rarely cheap. I'm going through this myself right now.

Welcome to the Wire and I hope a search will find what you need. If you need help with the search function, there are many that are old pros and will help you out.

Good luck!

73
-Jon
KJ6GVM

As seen on Expedition with TX plates: VEGETARIAN - An old Indian word for poor hunter

Grampa's Trooper
1974 FJ40
1987 FJ60