I have a stock, tape deck radio with equalizer that came out of my '87 GT. Radio worked when removed, only issue is that Power button will not stay pushed in. When pushing it in, radio works fine, but will not stay engaged to where the radio stays on. I'm unsure if the tape deck itself works, never tried it.
I'm not sure what price to list it at, or what work it entails to fix. Make me an offer if you're interested.