I have a 99 I30T

(similar to 99 maxima equipped with Bose)with the Bose factory setup installed. Needless to say the sound quality could be improved with aftermarket speakers and a new head unit. I have searched the forum searching for tips on bypassing the Bose speaker's amp( got a few suggests but nothing extremely helpful) and was wondering if any of you have successfully done so without running new speaker wire. Any help would be much appreciated!