[Grubby]

Buy a new block or new build from a good builder. A new block with all machining is likely going to be the same cost or less than a vintage 427 and you are taking a risk with the seller and the product on used iron.

Little to risk with Brent or other top builders. He will quote a price and you will get what you expect.

It looks like you are trying to save pennys at the risk of dollars.

John