Ok, good Ideas, is the rear end generally a weak point on these? I replaced the rear on my '86 dodge ram, went from the stock 8 1/4, to a 9 1/4. I also have a glass pack on the jeep now. Not sure it can get much more free flowing than that, minus mandrel bent pipes, and a header. I have a spectre High flow filter on the way for it, I got a instrument cluster for it that doesn't have just the idiot lights. Recently replaced the rear shocks, cause they were making noises. I also have some bosch 4 hole fuel injectors on the way. Sorry for sounding dumb, but I don't understand the codes you guys are using (ZJ, XJ, JK, etc), like I said, I'm new to jeeps, never really gave them much thought before I got this truck. Always been a Ford and Dodge guy, though I have had almost everything else, lol. I really like driving this truck, I get decent fuel economy, and that engine is really nice and torquey. I love being able to take off on some of the newer "sporty" imports, lol. I do plan to stay with a 2wd, because it's simpler, and in most cases I don't need a 4x4. I like junkyard upgrades, lol. I already have robbed parts from a couple different years of Cherokees, like my cluster, and a front grill, and signal lights. Would I be wise to install a hitch receiver, or is my bumper hitch good enough?