You can put a category 0 3 point on it. I think you can also put a sleeve hitch on it, but because you have the aluminum rear end you will need to get the lower bracket from
http://www.xtrememotorworks.com/
When you go to the site, hit cub cadet parts. Then select sleeve hitches. For the aluminum rear I would get one with "ears" like this one. This is the cheapest option with ears.
You can probably piece together a sleeve hitch setup for under $250. A category 0 3 point will run you around $500