Several of the aftermarket companies make floorboards that can be adapted. Most all are meant as a peg replacement, you just need the correct adapter to go to the peg mount.
You can dig through the pics sticky at the top of the 500 section to get an idea of what people are using.

 

Hey scoutmom,
Check out this http://www.vulcanforums.com/forums/showthread.php?t=105345
for floorboard info. Hope it helps.

 

pjckm

Thank you so much for the link.

Scoutmom