yup, as Eagle said, if the high mileage is what concerns you, MJ engines are known to hit 300k+ if properly cared for. the problems usually come from abuse, neglect, or the various sensors and other moving parts failing (which can happen to any engine). Having a relaible engine means being proactive. Don't wait for the radiator and hoses to pop, if it looks nasty, replace it now. that sort of thing. I would recommend starting with Cruiser's MJ tips. They cover all of the weak points we've found in the wiring and such. should be one of the first links in the link in my signature.