live hydraulic on super M

Next you need to decide what to use as a reservoir. M&W had a kit to replace the pump cover on the belly pump with a flat plate and plumb that as the reservoir, you could also buy the factory reservoir that mounts under the gas tank. If you choose the latter though, be aware you will need to relocate the battery under the seat (buy new battery box and seat suspension), and fabricate a new mount for your starter switch and choke control rods.

As far as sources, try a salvage yard or find a puller that want's to reduce weight on his Super M and trade all the parts with him. He will want your sheet metal rear fuel tank mount and your distributor drive housing.
Stan(VA).