I was just wondering if anyone knows if this hose is AC related? i have a 87 NA FC that came with no motor or tranny and im trying to see what this hose it to.

 

That metal hard line that is turned down is the brake booster line. The two threaded lines coming out of the firewall are AC related. The actual hose coming from the firewall to the hardline is coolant/heater related.

 

Thank you, that helped alot. Where does the brake booster line that is turned down go to?

 

Brake booster line goes to the large vacuum port on the UIM.