Crystal 70 Monte Carlo

Hi, i was told my 1970 was an a.c. car, but the unit was removed. I have the fender bracket for the hose, all a.c. vents in and under dash, and when I took off old heater hoses there were a.c. line hoses that were attached. However, my mechanic said he doesn't think it was ever an a.c. car based on this firwall box cover? What do you all think? Was there a different firewall box cover offered? Sorry not sure of the parts name?

Thanks Rob!

Just wanted to introduce my '70. Her name is Crystal. I just added some photos in the new members area. Looking forward to being a part of this group.