Carter/Ball carburetor- Help ID

Carter BBS as used on lots of slants. (Ball and Ball because there are 2 ball bearings inside)
SSD will probably chime in here and for sure say use that over the Holley. Buy a quality rebuild kit from Daytona and make careful adjustments per the FSM and you'll be good. Make sure the float doesn't leak.
I rebuilt my 64 BBS and it's been flawless over 2500 miles.