After much searching and deciding I am due to get a CLK 55 in about a month. I now own a 99 corvette, magnetic red with donaldson intake, CNC maf sensor ends, Corsa indy exhaust, heads and cam, upgraded brakes and suspension. I am just getting sick of the harsh ride and the rattles, Truly an American Car. Although it does move through the gears nicely and it's nice to waste m3 and m5 aholes that think they have the fastest cars in the world. My question is this. I know the CLK is a way better car over all and I just wanted to know what I should expect as far as power and torque goes. Are the CLK's easy to get upgraded equip, like exhaust and chips?? Is that where you would start? I also have noticed that cat back exhausts are actually cheaper than they are for the c5. Why is that? Thanks for all your help folks. Can't wait for the new car.