All you can do is ensure that the spindle to pivot distance of your arm is correct. Overhang should then be correct.
With the Fidelity Research arms you will have no problems as the cartridge was really designed with these arms in mind. Just ensure that if you mount the FR-64s to make the P to S distance 231.5mm rather than the manufacturer's recommended 230mm.
With the Fidelity Research arms you will have no problems as the cartridge was really designed with these arms in mind. Just ensure that if you mount the FR-64s to make the P to S distance 231.5mm rather than the manufacturer's recommended 230mm.