And here I thought a block with a couple deck cracks would be a last resort. I know the stuff is getting scarce though and have no intention of scrapping any of it. I tried to score a 291 from the u pull it on 25% off day and even had a core engine ready to go up there. But the engine was bright orange so I pulled a head off it. Bore measured 4" on the nose but the pistons said .030, no wonder it wasn't locked up despite being full of water. With rust and wear I think it would need to go minimum of .045-.050 to clean up and I don't know if the water freezing in it did any other damage so I left it. Would have cost me $175 plus core. So here's a question: do stock heads have tight enough build tolerance to use the center to center head bolt hole measurements as a pattern for a drill jig? The final hole diameters could be any size, we would just use the head in the machine to measure the center to center and then build a steel plate based off those dimensions. Or does anyone have the exact dimensions? Cool thing is, once that was drawn up, you just have to basically click "print" and they will nest as many plates as I want in between other parts. And I could order another run of them 5 years later with one text message. We did a run of 200-4r pan spacers using this exact process and they cost me like $8 each and I have a full scale blueprint and everything. That was 12 gauge sheet though and I don't know what 3/4 or 1" plate would cost me. He has access to some damn nice machinery AND he knows how to write the programs for it.