I tried it with my DZ 302 but they must have decked it more than the stamping-deep, which I guess is no surprise as most of the DZ stamps I've seen don't look that deeply pressed into the block. I can refer someone to where I got the acid if needed; it's a forensic lab that sells mainly to law enforcement but also to the public and the cost is minimal.
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1968 Camaro Ex-ISCA Show Car
John 10:30
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