i reckon tweeters in sail panels or something would be best,
www.knukonceptz.com for wire. many of the hardcore people here run the power line under the car enclosed in pvc pipe attached to the car. i ran my power along driver side (easy to put under trim) and rca and remote down center, all meeting at driver's side rear seat and into trunk. best would be power on driver side, rca or remote down middle and rca or remote down passenger side,
