looking for 85mm one please and thanks.
Interested in a RS-R?? http://www.n-e-c-c.com/forum/viewtopic.php?t=10833
Ive got an aftermarket one. Its mmild steel and has surface rust but you never see the thing anyways so who really cares what it looks like 
It is the cat farward so has the test pipe built in. Just pull the factory cat and down pipe and bolt this unit in. Asking $110