I agree to sonic test any Ford Cleveland block prior to boring.
As far as engine numbers IMHO, with the escalating prices of our cars. If you can find a donor motor to build I would do that, and save your numbers matching engine for originality.
Some things to note DeTomaso stamped the blocks on the drivers side(as seen in the above photos), versus Ford stamped the blocks on the passenger side. My car has the block stamped on the left, plus the heads were stamped with my cars VIN. Wasn't very pretty but they were stamped.
Jeff
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