This is the housing used on cars that have had the factory AC system on the firewall removed yet have to maintain the Factory heater core system to allow the vents and outlets.

     This is for the use on cars where the restoration requires primarily wanting to clean up the firewall and bring it back to factory look without pulling out all the vents, heater box, cables & ducts etc. yet having no huge AC Evaporator box hanging out.

Fits: 67-69 Camaro & Firebird

       66-74 GTO / LeMans / Chevelle