Hello. I just bought a alpine 600-c component system for my truck with built in crosovers. I thought I could just replace them with the exisitng speakers and tweeters are but it looks like I'm going to have run the wires from the a frame to the doors. Any ideas on the easiest way or are silverados already set with crossovers? If so could I just swap out the current coaxil speakers ? My truck has the factory set up with the separate tweeter and woofer. Thanks