I just purchased a 74" Terra Force Tiller, similar to everything attachments tiller, from my JD dealer here in western NC and to get it to mate with the JD iMatch quick hitch I had to add the following.
Two top link bushings. One 3/4 to 1 inch and put a 1 inch to 1 1/4 over the supplied 3/4 inch pin.
On the bottom lift arm pins I added a bushing kit, which had to be shortened 3/16 inch to fit, to replace the supplied bushings. When hooked up with the original bushings the bottom hooks on the iMatch were half on the bushing and half off.
Just a heads up if anyone plans on a similar purchase. Maybe it will save you all the research I had to do to find the right bushings and install.