I have these 5.5 X 7.5 mirrors
http://www.classicparts.com/1947-69-...ctinfo/58-204/
on these brackets
http://www.classicparts.com/1967-69-...ctinfo/58-120/
They look good but they're pretty useless when you're up to speed.
I really like the smaller tri-pod below eye level mirrors but I don't think anyone makes a good quality version of them.