To eliminate some possible confusion, this is a reinforcement for the toplink attachment point on the tractor. It is heavier metal and spreads the load on the rear transmission casting to better withstand the loads put on it by the backhoe. It is bolted up the back under the existing top link bracket and bends over the top of the transmission case and fastens to bolts on the top through additional brackets.
I am expecting to have to remove the seat pan to reach those bolts across the top, just haven't sat aside the time to do it yet.
Vernon