I called hmfengineering, the numbers on their website. Cost was $1199.00 plus shipping. You can also get them from hayabusaparts.com but they want you to pay extra tax when using a credit card, so even though they're $100 cheaper you don't save as much and I would rather deal with the manufacturer anyway. Easier fix a problem if there's a defect or something. Glad I could help.
Luke.