Which is the correct Four-Barrel Carburetor for a '68 302?

We have a '68 XR7-G with a J code engine in it. (Original CA car, AT). We’re starting to work on getting it back together correctly and are not sure which carburetor it was originally equipped with – it’s got a FoMoCo service replacement on it right now.

Does anyone know if it should be an Autolite 4100 or 4300, and what the carb ID tag would say?

Thanks in advance.

Dennis, the tag code is C8ZF-D and it would be an Autolite 4300. John

John, thanks so much. We thought it should be an Autolite 4300 (sigh), but weren’t sure.