yes there is i have one. its a tape but with a cord so u can hook up a cd player or mp3. but my 90 had the org. radio with tape deck and didnt work so good. but a buddy ran the same thing in his 98 xj and worked great for him. honestly i would change the radio and get the input jack and get a cd player. but that me. i put my jvc from my 95 in the 90 for that reason then got a alpine with more features i like in a radio. sorry so long but hopes this helps
oh and u might be able to use a cd changer but dont know on that... maybe someone would comment on that part.