I was looking at cars online and I found this picture, its in a 93 limo. Its different looking than anything i've seen??? anyone ever seen something like it?? I like the large caddy symbol though!
http://www.virginiausedcardealers.com/dominion/0073D.jpg

has a rear climate control panel in place of one of the vents too.

looks like the standard 96 only radio (93-95 same)

I saw that rear climate control in limo too . Yep, it's a '96 model year Fleetwood radio

1996 Radios had the receiver/amp unit in one package with the head unit. Previous models had the amp box in the trunk. I bet the amp went bad (as is quite common), and they found it easier to just replace the radio with a single-piece rather than the old 2-piece style.