I am planning to remove the air pump. There is only one belt for this pump so that isn't a issue.
But wat about the wiring, there are two smal conectors on the housing with two i think pressure sensors.
Just disconnect or ??

The engine is a 305 tpi

 

I just left them disconnected and everything is fine for me.

 

Ok, i will try that. When removing the tubing on the manifolts. Just put bolts in these holes?

 

If you leave te tubes on the manifolds and just remove the rubber lines from the check valves, you can get a standard NPT plug from plumbing section at hardware store to replace the check valves with (like a 3/8 NPT maybe).

I'm not sure what folks use when they remove the tubes from the manifolds - maybe just smaller NPT plugs (like a 1/4 NPT maybe).

 

I just removed the pump etc. Those tubes are hard to remove from the manifolt.
I am planning to build a complete new stainless dual exhaust system so headers will be placed. Any suggestions what will fit on a 305 tpi?

 

Almost any V8 SBC header will wit the motor - but you need 3rd gen specific headers to fit the car.