Thanks man!
Yes, coax runs down the driver side C pillar. You can see the airbag stuff clearly when you remove the C pillar plastic cover, I just ran the cable behind it safely out of the way. You can do the whole job through the high brake light hole and seal it up while you're in there (notorious for leaks), no need to drop the headliner. I struggled with he headliner for probably a couple hours trying to get it down without creasing it, couldn't figure it out so I gave up and just fished the cable toward the corner and made sure I wasn't going to interfere with the sunroof by looking and measuring through the brake light hole.
Maybe you've already discovered this, but there is a slit in the carpet under the driver seat, if you unbolt the floor storage compartment covers and the rear seat bracket bolts, and remove the plastic carpet plugs in the under backseat storage area, you can get your arm through there to fish cables to your transceiver. I guess you can probably just use the door sills too in your case.
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