Bag it, theres a kit out for $3100 FBSS atm, for all commos... Grab yourself a copy of Street Commodores, they frequently advertise in there, but they're situated in Queensland.
Don't worry about the scraping, we drove 3,500km in a VT on clubby 17's, dumped so far it rubbed over the slightest bumps.... You'll learn to live with it.. :)
Catcha later,
Dan.