There's a guy that advertises on IH Cub Cadet.COM that makes all kinds of stuff for Cub Cadets, Extreme Motorworks I think is the places name.
There's also a market place on IHCC.com, can post a want to buy post.
I built my own sleeve hitch, not hard if you have a welder. STOCK CC sleeve hitch mounted to IH's upside-down 3-point hitch. I built mine to pull off the axle carriers, not off the rear cover of the rearend.