My 98 GMC 1500 Z71 has 254 K on it and still runs very well. Just starting to show a very little bit of rust in the cab corners (you can't see it yet but i can see the bubles when I get down up close so work is in order). I have run lucas additive in it from about 180K and oil pressure runs a bit over 40 going down the road and 20 + at idle. I had to do a valve body in the trans when i first got it, had a fluke rear axle issue and the bypass got stuck and full O/P to filter made a mess. Other than that did intake gaskets, some front end stuff, radiator, WP, Alt, Starter. Starter was my fault, the rest was just wear type parts, interior is showing it's age but the truck presents well. most people guess it has a bit over 100K. Mark
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69 GTOx2
69 Judge CR 4SPD
70 RAIV Auto Judge
71 GT-37:usa2
71 T/A WHT AUTO
71 T/A LB 4SPD
72 T/A WHT 4spd
74 SD T/A Admiralty Blue Auto
others that reside in the barn too 
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