I have a 1957, TO35, it came with the cross bar hitch just like the one in the picture.
Later we bought a under belly rear hitch for the tractor.
I also use the stabilizer arms that go from the end of the lift arms up to the long pin when i have my seed sower mounted,
it runs off a rubber hose connected to the pto and the seeder must be at the same level all the time, so you do not ruin the drive line hose.
somewhere down the road i have seen a bracket that fits onto that long bolt, the bracket has a connector like the normal top link connection.
If you look up the old fergy post hole digger, the top link of the phd was attached to that long pin not the req top link.
Harry Ferguson and his boys, did not put that long bolt on there for show, I bet there are some dudes out there that know of many other fergy implements that were designed to be top link hitched to that long bolt.