i have a 94 gc it needs a motor i know someone with a 98 4.0 also and the automotive people say 95 is the last year 4.0 that will work what is the difference other than obdl and obdll ecu by the way my gc has a 4.0 also any help would be appreciated

I have a 95 GC with the 4.0 I6 and I think that the 95 is about the newest you will be able to install. Like most manufactuers, they would most likely have a mid-life touch up for the model. The 1st series of GC was 93-98, with 95 right in the middle. So I dont think that youll have much luck with the 98 4.0. Why are you swapping engines? The I6 is a fantastic engine that you can really put miles on. My friend saw a GC 4.0 with 250,000 miles on it. I wouldnt swap it just yet, unless it has some mechanical failure. So anyway, you may need to find another doner.

Im not saying you CANT do it, I just think that its not worth doing. But do what you want, its your Jeep.