Post on our cars for sale portion of this site. Be quite specific what you are looking for. Costs nothing and might flush something good out.
Another place worth pursuing might be contact with the mercedes benz club of america. Otherwise I can almost see an extensive time consuming hunt.
You have to seek out the good ones. They usually will not cross your path easily unless you are not looking for them.
My wife must have hunted long and hard before coming up with me.
Well she probably did not know any better and figured I was a fixer upper that she could restore. .
Work in progress still I guess .