I am wondering if anyone has any leads on frame and body parts no longer available from Mercedes-Benz (in the midst of completing a rear end collision re-repair).

I am aware of K&K Manufacturing, but they don't seem to have any W123 chassis parts.

Has anyone had experience with Neimoller?

Out of curiosity, if anyone knows, what happens to the original factory body parts presses after production?

Any other resources appreciated.