Cool! She looks great.
Glad it all worked out for you. I live in the Huron Pointe Sub, and drove past that boat several times a day for a long time. I noticed it was gone the other day and told my friend "I bet that guy bought the boat, cant wait to see it out on the lake!"
On my 255 Sundowner, I had the pump-out porta-potty. Those arent that uncommon. Just know that when the holding tank on that porta potty is full, its full. You need to get it pumped out the side (Metro Beach charges $12).
The rear bilge may be totally automatic but theres got to be a switch somewhere. If there isnt, you are going to need to install one. Earls on South River has the OEM switches so if you have to install a switch (or replace a worn one!) it will look factory.
The system is called mercathode. Strange its installed on an OMC because Volvo has their own "active protection" system. But either way, its a good thing to counter that galvanic corrosion, and I'd take anything I could get.
Are you going to be keeping the boat in the water somewhere? Are you going to be using it on Lake St Clair?