my history with Centa is as follows.

First Centa was installed by factory and they missed out tightening the centre nut enough. after 2000 miles the alternator shifted backward and seized with the Centa. Back to new Centa. Second one lasted 3000 miles and male female spline between crank and centa started rumbling horribly. Out it went and when checking crank splines they look ok, but centa splines are shot. Asked factory for advise. Answer was "install a new Centa" . New Centa does not sit tight with crank spline. So no way we will install this Centa as such. Question to factory. did S&S change any specs on crank between 2012 and 2016? No answer. You're out of warranty, you're out of luck