[Dave Rifkin]

I have what may be a stupid question but here goes anyway. My parents bought a 1973 Trans Am, red with white interior, 4-spd A/C, a really nice car. Here's the question; I noticed in Charlie's pictures that his car has A/C but there are no A/C vents in the engine turned dash applique like my parents car had. Would this be something specific to the SD cars or was the A/C added by the original owner?