Ok, I have a 97 TJ that had a 4.0 in it. However, the guy I got it from put a 4.0 in it from an 96 XJ but didn't have the TJ harness or computer, so he put the XJ computer in it. I have the project now and have the TJ harness. Question is, will the XJ computer work, or do I need to buy one for a 97 TJ?