I have recently noticed that I have a bit of an exhaust leak on my R53. Due to time constraints I haven't got a chance to address the problem, but last time my Mini was in the air I figured it was coming from one of the gaskets on my Invidia N1, so I assume that it is bad. The N1 exhaust was already installed on my Mini when I purchased it. I don't really know too much about cars yet, but can someone give me the specs for that exhaust gasket and possibly where I can find one in the Chicagoland area? I have emailed Invidia and have not heard back from them in weeks. Please Help!

Thank you in advance

Timo