Only if it runs and runs good. No skips, good oil pressure, no abnormal noises. The good news is, it's the short bellhousing. The 51-53 engines has an extended bellhousing flange on the block. Unless you can hear it run, it's just a core. I paid 400 dollars for mine and ended up the guy sent me 100 back because he thought it was a 354. He insisted. here's mine now. Looked much worse than yours when I got it.
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