You should also consider the master cylinder itself. The master cylinder for front dual brake caliper systems (e.g. FXDX) is different than the master cylinder for a single caliper system (e.g. FXD).I am adding a sidecar to my 2008 Street Bob and looking to transfer the brakes up to 1 hand control but am not sure where I can pick up a 2 into 1 hydralic adapter for the master cylinder on the handlebar. Anyone else have that set up? I knew a guy who used it on his trike but lost his email.