Hi Jason, That bracket is not from the model of mower that was shown in the original post, that mower uses a standard stabilizer bracket. The bracket in your picture is for a different model and has more attachment points than necessary for this particular model. Sure it will fit but it isn't the original type. The only connection necessary on that bracket for the mower shown originally is the pin for the breakaway, which is the same that you would use for a stabilizer bar. It should be the opposite hand to the one shown as No.1 in your illustration.
I have attached the page from the mower parts list that shows the stabilizer brackets in the foreground and as you will see they are the standard brackets not the special one used on another model..John(UK)