I am wanting to get into downhill racing next season and have some questions about sizing for a bike. I am 6ft and i ride a 19inch enduro and was wondering for downhill racing is a smaller frame better or worse and should i just stick with a large frame? Also i am looking to build a frame and would love to get either a Transition Gran Mal or Blindside which one would be better for both a freeride/downhill bike?