thanks for being the only one to respond Hummphrey!
I have decided to go with replacing the entire system as follows:
Head Unit - JVC KWAV50
Front Doors - Kenwood Component KFC-X1730P
Rear Doors - Kenwood KFC-X173
Sub - JL Stealthbox (Ebay $275)
Amps - JL XD's mono to run the sub and 4-channel for the doors
This is what the local shop, Mickey Shorr, had recommended hear in Detroit. Any thoughts???