That has been the only real issue I ran into so far. I had to grind the anchor off the Cub and weld it on the Hustler. I have a longer throttle cable on the way. The throttle and choke cable route on the same side for the FR and route from both sides of the engine on the FH. Hopefully not a big deal.
The diameter of the clutch on the FH is smaller but the pulleys are the same diameter. If the engine does fine but the smaller clutch becomes a problem I may have a bushing made to accept the 1.5" clutch off the FR. Fingers crossed.