I talked to my bro who has all of the audio equipment. He says I should be able to get away with just using the speaker cable to the amp. He says its called "Hi-Pass" or something like that.

One other thing too. I doubt it, but is it possible to splice the power running into the stock amp (bose) and connect it to another amp? If not, how difficult is it to run the power cable form the battery to the trunk?