Purchased a 1997, m1078 the end of January. I've put 900 miles on it to date. We use it to and from farm, on farm and as a large "tool box". I had to replace the oil cooler base, which developed a hairline crack that leaked oil as the engine warmed up. Looked like a freak mfg. defect. $450 parts from CAT and i did it myself. TMs helped. CTIS is acting whacky, still troubleshooting.
Appears that the major components had been replaced by the government in 2010.
I love the truck for what we use it for. Time will tell if I continue to love it.
PJ