These will fit

http://www.foxcreekleather.com/300.html
The above is indicated for our bikes with backrests, which may mean the bolts are longer. The fore & aft position of the mounting pins remains constant.

These are designed for our bikes without the backrest
http://www.foxcreekleather.com/299.html

The price shown includes shipping. At $150, that sounds right. The cheapest I've seen them is $145 without shipping. Perhaps someone knows of a better price. They're not cheap, but they should last a long time.

I just finished shoring up my heavily over loaded low end bags with inner & outer plastic panels. They came out pretty good, if I do say so myself. A little black Krylon Fusion paint on the outer panels, and they're fairly inconspicuous.