any ideas what stock air filter connections i need with a rats nest/vacuum delete?

 

I think we'd need to know which circuits on the carb you've disabled.

If you removed the air pump, then you don't need to exhaust riser pipe and that should be blocked. Any hose attached from the rats nest to air intake can be capped also.

 

I have capped everything except the float vent on the carburetor

 

Looks like you would lose the idle compensator hose.
Exhaust riser (big hose from exhaust manifold cover).
Air pump hose.
There is also a vacuum switch hose.

 

What do I do with the float vent off the carb? Leave it uncapped or run a line to the charcoal canister that is also being used by the fuel line or brake booster not sure have to check.

 

Can you post a picture from the Factory Service Manual for the float vent and rats nest connection?