I just installed the Rockford Fosgate RFX9000 in my '93. Nice features, less than $200, single CD/MP3, and the chrome/red matched my interior well. Also installed the Sony XPLOD speakers again for the match (rear speaker grills took minor mods to fit flush). Just about all head units will fit. Wiring is fairly straight forward - as the stock Alpine had RCA pre-outs to the stock amplifiers (I did cut and solder the connector from the stock head unit.) I was going to upgrade the amps, but the sound was pretty good already and as you know, trunk space is already at a premium. I did wire in the stock door tweeters, - which did seem to add quite a bit. A subwoofer would be nice, but I'm not willing to sacrifice the passenger well area.
Overall sound is good and between the exhaust being 24 inches from my left ear and the rear speakers being 12 inches from my right ear - I should be completely deaf by years end. At least then I won't have to listen to the wife whine about all the mods I'm doing!
Good luck!
ROCKET62
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