ahhh man that sucks! fill the pipe with water, close each end, than freez it. it might push the dent out. and its amazing! has awesome bottom, insane mid and high! the powerband is huge now!
I've got the cfm air scoops. Bolted right on without hitting the pipe. They did rub a little on my elka piggyback front shocks tho but never rubbed on my yfz450 front shocks, just the elka's.