Ok, so I have a 2000 Lincoln LS (V6 5sp manual
) which has a stock HU and 4 speakers (one per door). I've decided to replace the speakers with the Alpine S-type speakers and adding a 4ch Amp, as well as adding some subs and a mono amp to power those up. My problem is: Since I do not want to replace the stock HU (6cd changer in the glove comp. and a stearing wheel controlls), at first I though of running wires from HU (as signal wires) back to the trunk (to the amp(s) ) and then run new wires to each speaker direcly from the amp. Then I thought of just running wires from the HU to the AMP(s) and back to where the HU is and connecting them to the harness and using the original wiring to get signal back to the speakers. (I think it would save me a lot of time). Which way would be better...and how big of the difference would it make (I assume rewiring everything would be better... just not sure how noticable). Also, should I run speaker wires from the HU to the amp ??? or convert them as close to the HU into the RCA cables and run those??? Not sure which would provide more shielding and pick up less noize... Also, do you guys think that taping back into the speaker wires behind the HU will work???
Here is some additional info about my car and system:
Lincoln LS 2000, V6 w/ 4 speakers (one per door), no speakers in the rear deck. The HU has a tape-deck player and a 6cd changer in the glove compartment.
There is no factory amp in the car (that I could find in the trunk but if someone can give me an exact location I will check again), the speakers that I getting will be running at 40rms (250peak) so not very high power, and there is no RCA outputs in my HU and the amps have both high and low signa imputs:
Here is what I am getting:
Alpine MRP-F240 40w x 4 car amplifier
Alpine SPS-57C2 5"x7" 2-way 250w car speakers
Boss Audio GT1000M 850w
2x 10" JLs for the custom closed box.
Any help would be very appreciated!!! Thanks in advance!!!

Here is some additional info about my car and system:
Lincoln LS 2000, V6 w/ 4 speakers (one per door), no speakers in the rear deck. The HU has a tape-deck player and a 6cd changer in the glove compartment.
There is no factory amp in the car (that I could find in the trunk but if someone can give me an exact location I will check again), the speakers that I getting will be running at 40rms (250peak) so not very high power, and there is no RCA outputs in my HU and the amps have both high and low signa imputs:
Here is what I am getting:
Alpine MRP-F240 40w x 4 car amplifier
Alpine SPS-57C2 5"x7" 2-way 250w car speakers
Boss Audio GT1000M 850w
2x 10" JLs for the custom closed box.
Any help would be very appreciated!!! Thanks in advance!!!