fresh air actuators

[44boggers]

Was looking for some direction on which air vacuum actuators I will need. My 83' originally had ac but has been removed and I will only being using heat and defrost. I am wondering if I need all of the fresh air canister/actuators that I originally had with the AC. Such has the actuator that goes in the cowl and the vacuum canister that was on the firewall.

Please let me know what I need just for the heat to function properly.

Thanks

Paul