I don't know, but there are some Carter manuals online here: http://www.tocmp.com/manuals/Carbs/Carter/Chrysler/1965-1979/index.html Thanks, Gary H. mikeandlinda1@ wrote: > Can someone tell us what the S or SA after the Carter carb number means? > For example 3447 SA - is there a 3447 S? Does anyone know if some 3447's > were made later as there are a set on eBay with a B7 date code which we > do not understand. Thank you, Mike and Linda > ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html.