I know 12127 is Ford's number indicating "distributor." According to the catalog for Larry's Thunderbird in California, the part number for a distributor for a 1957 312 is T-12127-C. But I have a guy online who's selling one that he insists is the right one for a '57 TBird Y...part number FEJ 12127 A2.
Which is the right number?
Does anyone have pictures of the correct vacuum + centrifugal distributor off a '57 312?