Well you're set. But I bet you they can't reuse the muffler and resonator once they try to put it back on the new cats. The salt really corrodes the flanges. Mercedes should protectors covering these components from the elements. This winter I will go for my smog check and I will really see whether the new components improved emmissions. If they do then I suppose it is a good sell point once selling the vehicle. Since other cars have some wear and blockage on their exhaust components.