Custom sprockets will need yo be made. 530 stamping with whatever tooth count you deaire than the lt500 broche will be stamped. Than you will have to deal with the width of the 530 chain hittting the cases. Remember a 530 chain will ride on 520 sprockets but a 520 chain wont fit on a 530 sprocket.
They dont need it. A few 100hp singles out there still running 520 chains.