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I thought I might change cams in my SC LS2 once completed and this would save some headache and time. I changed direction to a Twin Turbo build and changed cams before ever running the engine so reused my factory cover.
You can verify it has not been run by checking my build thread.
As Summit shows, the casting reads 4254 but is the 4255 part number with LS2 / LS3 cam sensor port which uses the same base casting.