i made the hiller out of an old IH 8ft disc.
it is the rear gang inside bearings with two blades. I just cut the gang shaft off and welded a outside stop onto the shorten shaft then screwed the nut back on and was ready to go.
welded a rough 3 pt hitch onto the frame.
it works great hilling up corn or making ridges.
I use it every year with my little TO-35 Ferg