1991 200Q - cassette deck replacement?

[Bart Oleksy]

My efforts to get a 3rd-party deck into my 1991 200Q haven't gotten too
far, without replacing the speakers (so I'm told).  Does anyone have a
line on a good (working) replacement that would just swap in rather than
changing out speakers?  Or is there a range of years & models that I
could look for a replacement one?  (Meaning, for instance, would a 1993
Audi 90 deck likely work in my 1991 200Q?)

Thanks for all replies in advance...!

Bart
1986 CGT
1991 200Q (not a 20v)