I had planned on changing to a standard double next year, but I found a great deal on an Ultegra 6600 compact with bottom bracket. I have a couple of questions to see what else I would need.
1. The bottom bracket - my Felt has the older-style "internal" bb cups. Will the newer-style external cups fit my frame?
2. Rear derailleur - I currently have an Ultegra long-cage. Can this stay?
3. Is it possible to find a 39-tooth 110mm chainring if I decide I like my current gearing better?