92 318 is magnum, 93 360 is magnum. Many, many of these are out there with 250,000 miles or much higher. My 99 Durango has the 318. It has 186,*** miles on it. I have changed the water pump, and that is it on the motor/tranny. I did put 2 new front wheel hub assemblies on it. I did everything myself. Still drive it everyday.
P.S. I like all the old dodge trucks. I am not against any of them. You just have to way out all the things that are important to you. The easiest truck I have had to work on was a 1970 dodge d100. When I opened the hood, half the fender is raised with it. The top of the fenders are about a foot wide and made excellent work benches... lol