That looks great. I just finished one myself for my JD 4100. I welded a bracket on the back side though so that a can hang suitcase weights on it. I just turn it around to use the hitch.
Nice looking hitch... you'll get a lot of use out of it. I wound up buying the one out of the Northern Tool & Equipment catalog... let's say I've got a lot more invested in mine /forums/images/graemlins/tongue.gif