- 1991 to 1995 Wrangler YJ and 1997-1999 Wrangler TJ 4.0 blocks will interchange in XJ / ZJ and vice versa.
Anyway, I'd stick with one from the vehicles mentioned above. Good luck and be sure to start a build thread!
OK now I am confused - why would I be looking for something that interchanges with an XJ or ZJ? Its an '02 TJ block into a '99 TJ that I was asking about...