Tony, I have a 99 Cherokee that I utilize for my hunting truck. From my research, the 2000-2001 4.0 has some issues with cracked heads due to a redesign for emissions. I seem to recall some late 99's having the same issue. I have heard the 4.0 Jeeps are in high demand vs. the v6.
Jeeps don't cruise worth a crap, they 4x4.