I here reading and learning. I just bought a '06 extended cab Silverado and plan to upgrade the speakers and add a sub. I bought a used Alpine MRV-F357 amp and a JL Audio W3v2-D4 10" sub. I found a box to put the sub under the rear seat. Now I am trying to figure out what components to buy for the front doors and how to wire the amp into the OEM radio with out cutting any wires. An suggestion on the adapters I need?