Had a 1981 D150, 318 with 727 trans, 4bbl Holley carb, dual exhaust, headers, bumped up cam and the odometer quit working somewhere around the 170K mark and that was in 1999, sold it in 2008. Never saw the track with it, so no real idea what the numbers would have been, but, much to the chagrin of my ex, saw my fair share of kills with it and I still miss that truck!!! Made a great sleeper since I never did anything to change the stock appearance, other than losing the grille and not replacing it or the hood ornament that someone else thought they needed more than I did. Ran whatever oil I could afford since I had a 9 qt. oil pan. I would have it still today, but my dad talked me into selling it after I bought my new truck. Anyhoo, had a lot of fun with it and I just couldn't kill it lol, it took the abuse like a champ!