I have a roll/show bar on my car. It obstructs the windshield mounted mirror's view. I'm in the process of seeing if I can adapt a vertically adjustable mirror from a Porsche 356 or MG. Looks like I can make a rod with a plate to bolt into the windscreen and then anchor it to the center windshield stud. Anyone else tried this or see any issues before I start hacking and slashing?