Diesel gurus: I'm considering the purchase of a 1987 M1028 CUCV with 6.2L diesel. I'm concerned because I heard that Chevy had some serious problems with their diesels during this time period. Should I really be worried? The other thing is the highway cruising. I don't need to do it very often, but I'd like to be able to hit 65 once in a while so I can use the interstate. The gears are 4.56 and I think the tires are like 31". I believe that would put the RPM's up over 3000. If it's just bad mileage and noise, I don't care, but will I hurt the motor? Or will it not physically be able to do it? Thanks for any help.