Maybe. The W208 CLK chassis was the W202 chassis in disguise. Same basic suspension, steering, etc. Same wheelbase, same lots of stuff.
This is not a bad thing. It's widely recognized that the W202 chassis was one of the best compact sedan platforms around. It's a very rigid platform, and you can build a very fine handling car on it. Witness the AMG versions and the CLK's, which are known for having a terrific balance of ride and handling. The only real complaint even the magazines (which usually nit-pick MB) have is the high price relative to it's competitors.
I understand the W209 is based on the W203, but I have no idea of how many components are truly interchangeable.
1998 C230 "Black Betty"