I’ve always loved how so many Suzuki parts interchange across multiple engines/bikes. Those cam sprockets are I bet the same exact sprockets as a hayabusa. For that matter, the cylinder head looks like 2 cylinders of a busa (except they don’t have the little brass oil restrictors over there by the cam chain that sit below the cam hold down caps). That Burgman 650 must be one of the most complicated scooter engines around. Most are a crankcase/crank section with top end and variator and rear torque driver/clutch whereas there is all kind of stuff on this engine. Nice work man! 👍🏻