Does anyone have an idea how far in advance GM used voltage regulators on the assembly line? For example- If my car was built in Feb '72, what month would be used? I don't have the original to check, it was probably replaced anyway. I found out regulators are date coded- i.e. 64-72 and a letter for the month. 1971 December would be 1L January 72 would be 2A and so on.......
On common parts like that I'd think it'd be no more than a few weeks so a 2A or 2B. Nice to see you & your beautiful car in BG!
Looks like this seller may be worth reaching out to. 1L - November of 1971. 1972 Delco 519 442 Voltage Cadillac Regulator GTO 1119519 1L November 71 Buick | eBay 1M December of 1971 1972 71 Delco Remy Corvette Voltage Regulator 1119515 1M December 1971 - 72 515 | eBay
I recently bought a restored voltage regulator from a seller called Classic Restorations on eBay for $169. It was a correctly dated part for my GTO and was restored with nice plating. I was very happy with the show-ready appearance of the part. He does not currently show one with the date code you are seeking but it might be worth the time to send a message asking. Items for sale by classic-restorations | eBay