So I have a question (Since I like to tinker) I bought the Schwinn Traveller pictured below at another goodwill a couple months ago but it's too big, but has better components (wheels, drive train, brakes) and they are in better shape, I would like to swap them to the Le Tour. Two questions, is there any way to convert to STI shifters (or other brand brifters) with the 6 speed Shimano cassette? And is the biopace crankset worth using? Other than that all should swap pretty painlessly.