99 explorer problems

[T-Bouie]

I have a '99 ford explorer Sport. It has the 4.0 ohv. What other engine can i use to replace it. Please someone help me out here. I bought it for a bargin and really want to fix it up. It's my first one ever.

 

[BrooklynBay]

Welcome to this forum! Do you want to put a SOHC 4.0L into it or go with a 5.0L? It all depends upon how much you are willing to invest as far as time, and money.