Hope you have a BIIIIG wallet. Do yourself a favor and buy an already prepped racebike as it will be waaay cheaper.That doesn't include the 675, though, as few are racing them at this time.
I know Augusta Triumph /Ducati in Georgia is campaigning one in WERA with Steve Breckenridge, as well as Mike Himmelsbach running one in ASRA and I think CCS.
The bike, for the track, needs race bodywork, case covers, suspension upgrades, etc, etc, etc, as well as being fully safety wired. Then there's nice sticky race tires at $300 plus a set which on a 600, you'll go through at a prodigeous rate, entry fees and accommodations for the weekend.
Still, it's the absolute best and most fun way to empty your bank account :-D