4.0 L Jeep Engines?

I just wanted to add my .02 cents as well. I have a 93' with a 4.0. It has 160,000. I have had it for 10 years. It to this day is perfect! I'm pretty hard on cars too! The exhaust manfold did crack, and it's a pain in the *** to replace! After all the years I've had it though I can't complain. The best car I have ever had hands down! I thought about replacing it, just for something new, but then I think about it, and it's like? Why?