There are Prongs that go into the fast hitch that are intended for cat 1 or 2 equipment. Then you get a toplink bracket, and bolt it to your tractor for the toplink. I have these setups for my 450 and 806, they work pretty well.
They can be had from A+I parts dealers, and also on EBAY. There are probably other sources, but that's how I've purchased the 2 sets I own. -Andy