273 4-bbl Hi-PO Engine Appraisel?

This engine was a factory warrenty engine for my 1967 barracuda 4-bbrl 273/235HP. I have not run all the numbers on it but the carb on it is correct for my 67. I have the 4 bbl intake, exhaust manifolds and all! I see the block is dated 1969. The engine still has mechanical lifters. So I would assume they swapped everything over to the new block in 1969 from my original 1967 block. I wish I had papers to prove this dealer warrenty block! I am the fourth owner of the car and that was the info passed along to me.