Yup that's where to attach the engine to the stand. Just be careful and keep in mind the length and weight of the engine hanging off the mounting arms. A fully assembled 235 runs right around 550 - 600 lbs. Depending on the type of stand you have it can be a bit unstable when you start yanking on wrenches.
What I do to mount an engine on a stand is have it hanging from a hoist or other means and bolt the stand spider to the engine and then slip the rest of the stand onto the spider and lock it in place. Then lower the whole thing down onto the floor. It's a lot easier to jockey the stand onto the back of the engine than doing it the other way around, particularly when you are doing it alone.
Mike
