2008 expedition air bags

I guess this would be considered General, done searches for Expedition and Air Bags but it does not appear that anyone has asked this yet. I just purchased a 2008 Expedition XLT and started thinking of the side curtain air bags. I was an installer many years ago, heck I remember when install kits were all shaft and then DIN came out, then I built police cars and various other public safety rigs, air bags were more common but nothing side curtain.

Anyway, I plan to install a 3/4 hole mount (probably 2-3 of them) in the roof for GPS, Amateur Radio and Wireless Data antenna mounts. Usually this was a no brainer for me, make sure no cross member was in the way, drill it out with a hole saw made for exactly this purpose and fish the wire over to the side, never even dropped a headliner. Well I guess the game is different now, does anyone know the 08' Expedition XLT ? What do I have to be careful with ? How will the air bag, wiring, or even gas canisters get in the way with antenna cables, or power/audio/video if I put in an overhead DVD system for the 2nd row, or even 1st and 2nd row? Right now I do not even want to drop the headliner or mess with the pillar area (usually run wires down that way also) not knowing if I will be messing with fire in that area.

Also can anyone direct me to any Ford Expedition forums that are specific for electronics.

Thanks,Rich