My DD, a '92 MJ, has 209,xxx on the odometer. Actual miles is probably 10K more. When my speed sensor died (back in the 90's), it took me about a year to replace it. LOL
No engine work done.
I've only replaced: water pump, alternator, (numerous) clutches, throttle body sensor, radiator and a few odds and end suspension parts. The radiator had about 200K, but a rock in AZ ended its life :-(