I suppose there is no chance you could get an ordinary blade disc on there as well without blades of course . Pulley probably comes upwards to far. Turn the centre out of a blade disc and weld it to the pulley maybe Probably still height problems I think a bit of weight further out would give more momentum.
Obviously try the 460 pro boss first if you can find one.
Max,
Do all the straight inlet motors have the big boss. Isn't that the right motor for a 600.
I'm waiting with great interest on Norms results here.
