The 2004 S430s and S500s with sport packages do not have the dual chrome outlets. only the 01-02s with sport packages as well as the 02 S55. The 03-05 S500 and S430 sportlines look like AMG cars without the exhaust. Their bodies are identical except for the wheels. Real AMG cars have different (non-monoblock) wheels then the sportline cars. Kinda like the CLK500 or CLK430 and the CLK55 and how they all look so familiar to the average person. I am guessing you raced a S500 Sport. Even the older S55 is still a beast so I dont think you could have hung with that.