56kz2slow - You can get a pigtail piece of coax that is smaller than standard rg58 (about 1/3 the width) that'll help with routing the antenna thru an opening with weather stripping.

Dave D - I'll be sure to post back here but it may be a bit yet since I have yet to buy the radio

As an aside, I have a Sirius radio and after trying to find a clean way to route the antenna wire, I just decided to mount the antenna on the dash. Since the antenna is small it really isn't too objectionable. After testing the reception for a few days I just used a couple of pieces of velcro to hold it in place - works great (I have an 05 and the wire routes nicely up the right hand side of the center console).

Lastly, I just installed a RAM mount to hold my cell phone and Sirius tuner. Works great (bolted down to the transmission hump.