This implies that you HU is capable of accepting an after market CD changer.....but you just want vanilla RCA inputs.
Which would make this exactly what you want - if you had a '98-'02 Honda Passport.

To get the full specs of the HU you might have to pull it from the dash and find the mfg details and model numbers, and then start using google. But, and this is just my humble opinion, I doubt it has an aux input.