Leo
Glad you posted that link as I was just getting ready to do the same thing. /forums/images/graemlins/wink.gif
For all interested, note that the outside diameter of the two bushings placed on attachments to be hooked to the quick hitch's (such as SpeeCo or iMatch) are 1 7/16" and fit the lower 'hooks', as well they are the same diameter as Cat III. The inside diameter of these bushings are 7/8" if they are to fit on Cat I attachments.