sat radio antenna

I am going to tag along on this thread because in my mind it is similar.
I just took the plunge with an EZ Pass. Am I going to encounter the same problem with the TC overhang and the transponder? The instructions I got were to mount it up near the top of the windshield. Anyone on here use EX Pass. Our Northstar has the north/south bed configuration and really covers the truck cab.
Thanks