I have my SHO back from the dealership. They installed a new PP PTU and did a couple of maintenance items I can't do right now. No more grinding noises, yeah. I paid the core charge and kept the old one. I'm going to open it up to see what is starting to fail. Dealership asked me why was I changing it out, since it wasn't broke. I said that's why, I wanted it changed before it totally grenaded and took something else out.
Oh found put when looking at Ford's parts online, you have to go under Police Utility Sedan to find the correct PTU for a PP car.