Go to the DRZ forum at www.thumpertalk.com
and search and ask. Any mod that can be done to a DRZ has been done there in one form or another. Best DRZ forum around IMO.
BTW,I buy a lot of my maintenance stuff at www.rockymountainatv.com
Airfilters, clutch cables, etc.
Motard is 17"....there's probably a set for sale in the Thumpertalk classifieds or soon will be.