Who Know's Carter Afb Carbs!!

[66340SEDAN]

I Have A Few Mopar Carter Afb 4 Barrel Carbs, I Am Not Sure What They Are For. Here Are The Numbers:
#3980s F8
#3253s AL1
#3644s K3

Any Help Figuring These Out Would Be Great, Thanks!

 

[crackedback]

#3980s F8 1965 273 Marine
#3253s AL1 1962 361 AT HP
#3644s K3 1964 413