Buy it there and you can modify it with a simple bolt nad washer to fit onto the back deck (between the speakers). If you look from within the trunk you can see a hole through the deck and with a simple bolt (and a little creative mount disassembly) you can attach the mount there w/o buying a bar. And when you get a cage, like I now have, you can just remount on a cross bar. As far as the suction mounts go, I doubt many schools would allow them b/c they are not formally secured down.