I hoping to get some advice here. I know the cummins motor has a good reputation, but how many miles is too many??? The truck is loaded and very clean. The price is $9000 negotiable. I'm concerned it may break me up in repair costs and tow bills! It has a 5 speed manual and was replaced at 200000, then replaced again at 450000, finally at 457000 it needed 5th gear/reverse replaced. Sounds like alot of tranny repairs! Is it a good risk? The truck was suppose to used for escorting wide loads and one owner. What would be a good price? I don't plan on driving it everyday. I forgot to mention it is 4x4. Would a 6 speed manual fit in it? How much is a 6 speed tranny? I can install it myself. Thanks!