Hi,
I'm a new member so I didn't see your post until today. If you're still looking for the two drive belts for your original Mopar Cassette/Recorder/Player, go to your local seal and gasket distributor and get 1/16" thk. O-Rings of the appropriate length. I believe that the Parker O-ring numbers are #031 and #045. I think thaat those are the numbers. Check to mak sure.
attaboy