Anyone have 2 barrel carb ?

The OSAC valve on the firewall should be bypassed; these are notorious for causing stumble and mushy acceleration. They were put there to squeak the new '73s past their Federal emissions type-approval tests so the cars would be legal to offer for first sale. Run the vacuum hose directly from the nipple in the centre of your first pic, to the distributor vacuum advance. No need to cap or loop the OSAC valve itself.

As jas0162 correctly says, the bowl vent should definitely not be capped. If a previous owner hacked and pillaged the vapour canister system, put it back together as described here; this system gives multiple benefits and zero drawbacks.

Beyond that: Carburetor operation and repair manuals and links to training movies and carb repair/modification threads, including for your Carter BBD, are posted here for free download.