Currently have a Specialized Sirrus that has a 3x8 drivetrain with a squaretaper bottom bracket. Looking to switch to a 2x10 set up and have found a 2x CX crank I'd like to use that also supports a square taper BB. My question is do I need to get a new BB or can I just swap out the crank/crankarm and be good to go? Obviously I know I have swap everything else over to 2x10 components.