http://www1.mscdirect.com/cgi/nnsrhm?KNC-T7L391316886
http://www.mcmaster.com/
If your willing to put some time into it you might be able to. Take some calipers measure the diamiter of the bolt, then the top bushing thats missing, also the width. You might be able to get pretty close then machine it down somehow. Its like finding a bushing for an old Lewmar winch or sheave.
