Kenneyz,
Yes, I made each of the arm sockets from two pieces of angle iron. They were made "in plce" to be sure of a good fit, but one that could be slid on and off easily. I was somewhat leary of just using the lower arms as the complete support for the scoop, but it has proven itself to be an excellant choice. This also left the top link bracket on the tractor free for the Spot Sprayer Tank frame I built.
Good luck to you and happy tractorin' /w3tcompact/icons/grin.gif