I just got one of these for my Cruiser.
http://www.beltronics.com/fx.html
I got the FX-1 from Circuit City. It was in stock at the $149.99 retail price.
I took off the suction cups from the bracket and slid the mounting bracket between the overhead console and the headliner at the rear of the overhead console for a semi-permanent installation. I also made a new power pigtail that I wired into the overhead console power source, and placed a switch to control it in the sunroof switch location. (No sunroof on mine).
Haven't had much time to play with it, but it should be a way to tell if there are any differences in performance after mods.
I hope to take some pics of the final installation in the daylight and post them.