Here are some pics of my XM2GO installed in my Excursion.
The Panavise mount I used is the only one of its kind to utilize the ashtray/cupholder screw so no dash removal is needed. I ran the wires into the cubby hole where I drilled a hole out of site.
Panavise mount # 751072399 (panavise.com)
Panavise swivel # 685-PM
I ordered my PIE adpater to hook into my headunit from myradiostore.com.
The attenna for my Excursion is just above the window & R-View mirror outside and run along the window trim. In a P-Up, come in through the 3rd brake light.
Check out xmfan.com as they have pictures of mountings, but I think that mine is the cleanest install to date due to the panavise mount they have developed for the cupholder/ashtray.
Let me know if you have any questions.