Can someone tell me what this is?

Dealer installed A/C components- They are not Factory a/c parts

Exactly. Look under the dash and see if there aren't holes drilled in it that held the aftermarket AC unit. There will be another big hole in the firewall where the pressure lines were run through, and another hole in the floor where the drain hose ran down. Oh, did I mention that I jerked one of these crappy AC systems out of a slant six Demon two years ago?!?