@sbeebe 12-valve Cummins are great, as are the 7.3L Powerstroke Fords. I had a '94 Cummins I loved. It was relatively inexpensive, got about 19 mpg. Unfortunately, it was just a single cab, so didn't work well for my growing family.
@sbeebe Those can be fun trips, but it's disappointing when it doesn't work out. I had a similar circumstance several years ago, looking at an extended cab, 4WD 1976 Ford F350. Seller knew it was rare, wanted new car $, despite its condition.
@sbeebe I saw that ad you posted the other day. It read like the guy thought he was sitting on the pot of gold at the end of the rainbow. Some folks seem to struggle with the reality that rare doesn't automatically equal valuable.