There's some great stories on this thread.
Have owned this car since mid-1985, now 20 years. Have all service records since new.
Currently in the midst of a long, slow project with the objective of enhancements to reliability, safety, security, and performance, as well as making the car suitable for coast-to-coast drives with all the levels of creature comforts my wife has grown to demand. This means many things, such as A/C running full blast all the time in warm/hot weather, including while the top is down at freeway speeds, active ventilation seats, back massagers, all the entertainment systems...the list goes on & on.
Although we're still not done, last week the local M-B dealer described the car as a 2006 / 1971 280SL, which sounded pleasing to me. During this enhancement process no fundamental changes have been made, meaning no cutting of metal.
As the years continue to pass my goal is to keep the car current with certain technological enhancements, all of which will be reasonably well hidden.
My philosophy is that the car should be easily returnable to orig. conditon/configuration if and when the mood should strike. Primarily that would mean removing all the new surface materials, such as stripping the leather cover from the ship's wheel, pulling up the modern M-B carpet mat'l, putting the original air filter, exhaust system, original-style rearview mirror, speakers, viscous-clutch fan, etc, etc. back in place. Not sure why I'm keeping all this stuff, because I'm pretty sure the car will not be returned to it's fully original configuration (including MB Tex) in my lifetime. We've not used this 280SL too much during the past 20 years, but intend to in the future. Can't think of a better way to kick around N. America (wife strongly prefers good hotels to a motor home).
Tom in Boise
'71 280SL 4-spd, signal red w/lt. tan interior, restored/enhanced