YOU KNOW WHAT??
YOU NEED TO GO TO THE LOCAL JUNKYARD,ASAP.
ASK FOR A SMALL GMC/CHEVY PICKUP TRUCK RADIO RECEIVER!!
The same one that is in those models years as your car is in those trucks!!
This will serve as a replacement, at a small cost to you!
I have a 1989 Reatta only a factory replacement will work for a radio receiver. After some leg work pounding concrtete, I was told by some country bumpkin that the same radio in my car part number 16072780; comes out of the same model year Chevy/GMC small truck!! At first I was shocked to believe it. Then I went to the local junkyard and asked for a small pickup truck by chevy/gmc and loo and behold: I had the same part number and design as the receiver that came pout of my car!! It works like a charm at $50 only and $90 to put in by the car dealer!! Go try it yourself, and see what hapens! Good luck and have a nice day.