Dual pulley assy for Annie

[dr deuce]

I need a dual pulley assy for the end of the boom for my ABM 51 CCKW prototype Schield-Bantam crane. I have a single pulley there now and cannot run the new to me clam shell bucket with just one of the winch drum that she has. Preferably in the New England USA area as it will be quite heavy. This a long shot, but what the heck. The boom assy itself has a plate on the side that says Schield Bantam out by the end where the pulleys are located.

Thanks