How deep does the NMO mount extend INTO the car? I have a forester with the giant sunroof and I had plans on using that style of antenna for the mobile HAM rig. However, I realized that the sunroof and blocking pad might extend too far back for effective antenna mounting (center of roof).
I'm hoping the mounts are relatively flush, or at least they don't stick too far down that the glass or blocking pad get in the way or are prevented from extending all the way back. I haven't taken the roof liner off to see how much space I have to play with. However, if I can avoid this worry altogether with some upfront knowledge, it will help.
EDIT: from the (recent) look back through this thread, it doesn't look like it would extend TOO far into the car. However, some exact measurements would be helpful.