I am thinking of upgrading the suspension in my 2006 C 280 4-matic. It seems that Koni does not make an upgrade for the 4-matic. I also checked Bilstein and they don't list their heavy-duty shocks for my car either. Am I missing something or do I have to live with the relatively soft shocks that come from the factory? Would the shocks from the Sport versions of the C 280 (2 wheel drive) fit the 4 matic?[/align][/align]Any help/information would be appreciated.[/align][/align]Regards,[/align][/align]Will[/align]