I took off one of the bolts that hold the loader bracket to the trans case and it's a 3/4" bolt. I'm thinking I'll just drill out the top hole in the step bracket and mount it under the outside 3/4" bolt on the outside of that loader bracket. Don't know how this step bracket could be installed on the trans even without the loader bracket as they too are 3/4", unless they were enlarged to mount the loader. I haven't a clue, but I'll get it on.
Spending most of my days helping the wife at this point. She can't put any weight on the bad foot and is on a rolling walker but still needs help with that. Full time nurse here, cooking, laundry and everything, at least we can afford a cleaning person and gardener at least one day a week. I guess this is what they call 'for worse'.