Thanks for the info.
The main reason I am asking is I have completely re-done the sound system in my car, except for the door subs. Right now, they are just paper weights. I was contemplating on buying new subs and a new amp to replace those however I am thinking about leaving the stock subs and just replacing the amp. Since I have a new deck and all new wiring, I do not think I can use the stock amps, not to mention I am not sure which amps were for the door subs (original shaker 1000 system had 3 amps).
Any info is appreciated!!