Real ZL-1 intake?

[KevinCav]

Does anyone have a KNOWN ORIGINAL ZL-1 intake they can look at for me? I am thinking of purchasing a 3933198 intake that is supposedly original. It has the expected grinding in the part number, however the "1" remains cast with only the last two digits ground out and stamped. Colvins book says that the last three digits should be ground off and that the "198" was hand stamped.Although the seller claims this is correct (even says Colvin has seen this intake personally and agreed that it is a real ZL-1) I feel it is a 3933163 that was "modified" by someone who didn't know enough to grind down the third digit.Can anyone compare it to a real, original ZL-1 intake and respond Thanks!