Needless to say, life is good for Jay Leno. Not only has the former late night talk show host moved on to greener pastures, Mercedes-Benz has provided him with a 6.2-liter V8 (M156) -- not, as previously reported, the SLS AMG's M159 engine -- to cram into his vintage 300SEL 6.3.
As opposed to the SLS' M159, with its dry-sump lubrication system, bespoke internals and magnesium intake manifold, the M156 uses a traditional wet-sump setup -- the same engine fitted to the S63, SL63 and E63 AMG. Regardless, it's only down 45 horsepower from its gullwinged sibling, putting out 518 hp rather than the SLS' 563 hp. Not that it will make much difference when it's powering Leno's modernized lead sled.