So I am a little over my head here. My learning curve is steep with lots to learn. I picked up my 06 GF Tass the other day and I want to add a set discs. Either the BB7 or Juicy7's. The rotor options are 160mm, 185mm or 203mm. Everything I can find on the my bike says it takes a 6" rotor. So tell me guys.....what do I need to order? As always....thanks for your patience with this newbie.