Aside from being overkill it would rob power from an already rather marginal motorsickle.
Buy a decent o-ring 428 and set of sprockets and they'll far outlast their 530 counterparts installed on high-HP bikes.
I've never looked into it but I'm fairly certain that 530 sprockets in our front spline size and rear wheel pattern would be custom order items, so in the end I doubt you'd save much by converting.