 Bought my 1997 in 2000 with 80k on it.  I now have 235k.  Over the last 7 years and 150 I have done little more than required maintenance.  I have done the following one time: belts, alternator, shocks & struts, muffler.  All fluids are changed regularly and I just did the second tire replacement.  The only unexpected replacement was the rear trailing arm bushings that cost me 150 in parts and a few hours of work. The dealer will do it for about 650.  Overall it has been an excellent reliable truck that I expect to see 300k without any major issues. 