need help id'ing ACDELCO C-1308 vacuum advance

Hey y'all,

Can anyone id this vacuum advance for me? It's listed on Ebay as fitting 1965 barracuda 273 but doesn't indicate 2 or 4 bbl, if there is a difference I don't know. I did a google search and absolutely nothing came back.

ACDELCO C-1308

NEW - Out Of Box ACDELCO C-1308 Distributor Vacuum Advance Control | eBay
Isn't a 4bbl one.......those use a cast iron Prestolite dual point, and an advance with a thread-on vacuum nipple.