ok may i make a suggestion. 1st...remmy that was a pretty pimp drawing.
2nd no stock units come with pre amp outlets.
3rd...if ur goin to do a system just get a new head unit....it will sound 100% better. and installing the amp will just be easier. (if u get a install the amp now and then get a headunit later on ur goin to be installin the system 2 times)
4th Get a class D or Mono amplifier.....theyre made JUST for subs. Rockford makes some really good ones. i recommend the rockford fosgate BD1000.1 amp.....ive got it hooked up with my infinity kappa perfect 12 (only 1 sub) And that ish ROCKS.........check ebay for that amp cuz they sell the older style ones for under 300 and those amps used to retail over 600$......


i tell ya what. Just drive to NJ and ill install the system for ya. I enjoy that kinda ****.