I've narrowed it down to two:
1. 2005 with 6,700 miles. Cobra exhaust (says it's been synced), vmax small wind shield, new tires, Progressive 412 (I'm 6' tall), SASY V-Boost controller (new in box, not installed), engine guards.
2. 2007 with 8,000 miles. Kerker slip-ons, stage 1 dynojet...