I am wondering what the diameter of the down tube of the frame is? I am trying to find the exact size so I can put clamps directly on the frame to attach foot pegs to those. I am also wondering what to do with my rear turn signals? I have Vance and Hince drag pipes on my bike, plus with having the rear turn signals located where they are, I am very limited with which side bags I can put on my bike. I would appreciate the help.