I'm going to mount the tube vertically, behind the spare tire in the left rear corner of my '94 full size blazer. The speaker and port facing down into the corner as close as I can get it. I will have to extend the spare tire mounting forward somewhat and fab up a mounting bracket for the tube. No big deal I am a fabricator with a welder
. I don't really use that corner of the vehicle for backing up that much anyway, so what do you think?