CNC-Dude I know what you mean. When my 79 GMC had the head fail due to burnt valves and cracking, I couldn't find any used heads that weren't cracked. The Junkyards at the time told me that the 250 2bbl head and a head for an Escort were impossible to find. This was in 1988. The local Chevy still STOCKED a new head which ment that they were selling a lot of them.
efi-diy I know what you mean. We have a Trailblazer that might get parted out someday to power something else! Can't answer for anyone else but for me I just like these old engines. Jay