Technical WCFB identification

I just acquired 3 Carter WCFB carbs that I don't know what they are for. The tops on all 3 are 6-1672, the body's are 0-1451, 0-1465 and 0-1241. The only numbers I can find on the bases are 46 on the bottom of two of them. Any help would be appreciated.

 

This thread has a lot of WCFB information. Pay particular attention to post #4. https://www.jalopyjournal.com/forum/threads/carter-wcfb-tech.851851/page-4#post-12271688

Jon isn't called "carbking" for nothing.

 

'63-65 GM

 

Thanks Tubman.