Just finished the deal. Bought it from the original owner, who maintained the car very well. It has about 160k miles.
Tomorrow, I'll drop it off at the body shop to fix the two small rust spots -- one on the hatch and one on the rear wheel well.
I have owned a bunch of W123 diesels, a W126 diesel, (briefly) a W116 diesel, and currently a Sprinter van. Not new to Mercedes, but this is my first gasoline-powered one.
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.