1971 Carb Identification

From what I've read , the 1971 model year ThermoQuads were 'recalled' and replaced under warranty with the 1972 model T.Q.
Not sure how many , if any , original 1971 m.y. T.Q.'s are still around because of this recall
( I'm sure they were scrapped ) .

As far as p.n.'s , I don't know . 66340SEDAN mentions the tin ( or aluminum perhaps ) triangular tag that's attached to the factory-installed carbs . IF you can find one on yours , it's easy to decode ; it'll have the build date of the carb in Julian Calendar dating ( e.g. , "3600" = 360th day of 1970 ) , as well as the carb's model number .