I have the slp on my car 03 dont have an audio clip but I will try to put one together for you guys. All I can say is it is freaking loud and does not sound like anything else out there. I really like it though, it sounds wicked. What I really like is you can drive the car quiet or you can drive the car real loud when you have too.
I can vouch for this statement.... although I'm not real fond of the SLP's sound myself. That's the problem with picking out a cat back for these new Cobra's. They all provide almost equal gains in power/torque, but the overall sound is so different amongst them all it makes choosing one a very subjective process.