I will be installing ultegra 6800 Di2 on a friend's 2014 or 2015 Quintana Roo cd.01 Medium Large and I was wondering if anyone else has done this and would love to see what length wires were used. Obviously, I will do the measurements, but I figured this would be a good starting place. It will be internal. Does someone make a seat post mount for the battery for this bike? Any help is greatly appreciated. Thanks.