[s-cars] Aftermarket head replace (95.5) Delta radio?

[keithbedard at verizon.net]

Looking for some help for upgrading my Delta radio.  From what I know about this
radio setup, there is no aftermarket head unit which would be compatible with the
factory amplified speaker setup (and only OEM cd changer will work with system).
Is this correct?

I would like to find an aftermarket mp3 head unit while still able to use the
factory amp speaker system.  Has anyone done this?  Does anyone have the output
specs for the factory radio to the factory speakers?

TIA.  Any info greatly apprec.

Keith Bedard
Medford & Westminster, MA
95