Was out buying a few parts and I found a replacement mirror at AutoZone I thought I would pass along. This mirror is slightly shorter, less than an inch for sure, and a bit wider than the stock ones. They have basically the same mount though instead of a stud sticking out that you tighten a not on, they have a kind of tube threaded on the inside that you put a bolt from the rear, through the mirror arm, into and tighten. The metal is stainless steel.

NOTE: The bolt that needs to go through the mirror arm on these is 5/16ths inch, stock is 1/4...you have to open the mont hole in the arm to the new size.

These are rectangular, measures are:
5 7/8ths wide by 7 3/4 tall according to the box.
The manufacturer on the box is Koehler Enterprises and the part number on the box is RA750HS.
Cost was $7.99 each.

I painted mine OD and mounted them....they look good to me...maybe not perfect but real close, definately cheaper and arent going to rust anytime soon.

brute4c