There is an article on mbcoupes.com on a 5.0 liter M119 installation in a 560 SEC.
I think the guy's name is Satish.
He posts here under the name stummala.
That would be a nice project, wouldn't it?
Bergwerks is a shop here in Southern California that has done several conversions on 560 SEC's.
2001 E430, Bourdeaux Red, Oyster interior.
1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".