Long before starting to badge 6.2 V8s as 6.3s as a ploy to sell more cars by referring back to its past, Mercedes-Benz created the best sedan in the world by jamming its largest engine into its smaller four-door's body. The 300 SEL 6.3 has been Jay Leno's favorite car ever since.
His 1972 6.3 cost $5,000 seven years ago and has 327,000 miles on it by now, yet everything is in working order, including the air-suspension and all the electronics. The thick leather seats and the wooden trim stayed in once piece as well over the last 43 years, which shows you what Mercedes-Benz quality meant back in the day.
Now, thanks to the conservative commenters on Youtube, this silver beast is going to be restored to its original glory instead of getting a new drivetrain from an SLS AMG.