A/C comp...how do they date them???

[budnate]

Thnx Steve looks like I have the correct date on the Caprice..need to look in the attic at the other one...next question is there any difference in lets say my Caprice BB unit and the Camaros SB unit???? both being built 11/66 for the 67 year...its crazy both cars are Los 11B cars..sat in the same lot when new now sitting in the garage next to each other...lol...reason for the question is if the one in the attic is off date wise.. its more important that the dated one be on the Camaro...thnx for the info