I want to upgrade my speakers in my Tundra (when it actually gets here) right away. It has the non JBL 6 speaker setup. I pulled all my previous stereo upgrades out of my 05 4Runner that I had installed. I was using Elemental Designs 6.5" components (Elemental Designs). They can be mounted as coaxial or separate the tweeter like components. I would like to utilize these in the Tundra with the factory radio (that will probably get upgraded down the road). I will mount the speakers as coaxial in the rear doors but I'm not sure how I should mount them up front because of the dash speakers under the windshield. What size speakers are these anyways and how are the wired with the front door (crossover or in parallel?). Would I be better off mounting them as coaxial in the front and keeping the factory dash speakers or mounting them as components and putting the tweeter in the sail panel then disconnecting the dash speakers?