That makes perfect sense, perhaps my original post which noted that part number 3920627 was factory line correct and 3937930 was over the counter back in the day would align with the assumption that higher numbers would typically be for "revisions".
However saying this, a few members have early production cars with engine mounts 3937930.....???
Last edited by 68 DANA; 03-14-2019 at 02:33 AM.
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