Well, I may go a different direction. Was up at a Pick-N-Pull today acquiring thing from one of the only two RMW within 500 miles, and what was a row over?
2010 Buick Lacrosse, with big ass mirrors and turn signals on the mirrors! They mount in the triangle at the front of the window like the Caprice, and they're about double the size of the RM mirrors. Smooth, too. Now I just have to figure out the wiring...