That helps the price that it's a 1967 block. I bought a medium riser engine built 100% all from NOS parts and never started from a neighbor for $10,000 and I don't even have anything to put it in, yet. I knew the history of its NOS parts that came from a Ford dealer, and I knew the engine builder, so I knew exactly what I was getting. The block is around a 1971 replacement block, still a real side-oiler but not as desirable as an earlier block. Years later at an Ford estate sale I bought a pair of used tunnel port heads and an NOS tunnel port 4V intake in the Ford box all for $60.00. I did not hear about the sale until a month after it had been picked clean, but those heads were still on the shelf, nobody knew what they were. The "Chevy car guy" handling the estate sale of "Ford parts" looked at those large round ports and said, "those are big, I know exactly what those are, those are 460 pickup heads, how about $60.00 for all of it and I'll toss in a Holley 4V carb to go on the intake." I said, "that sounds fair". To answer your question on the tunnel port value it depends on if your asking a Chevy guy or a Ford guy.
