I had one on my 1914 that was pretty similar to that before my dad sold it. They produce great results in previously tilled material. The only downfall to them is their size...on "virgin ground" they can push the tractor without even thinking about it and not dig in. Just have your hand on the lift lever while you are tilling and be ready to pull it up in case it catches something and starts pushing you. Obviously, don't let people stand in front of you.
It is a great machine. I am jelous. I hope to find one again for mine soon.
Just as a side note, if you want to impress the neighbhors, that much weight on the back of that machine will produce a nice wheelie! Have fun with it and post some pics when you get it digging!!!