Originally Posted by Nithmo

It depends what kind of conditions his car goes through. If he doesn't winter drive his Z, I'm willing to bet it'll hold up for years to come. Brand name exhausts differ in that they use a high quality steel for their products. If OPs is regulated to summer use, even in rain, I don't see much going wrong. MAYBE rust, eventually, but I'm sure he could get his $300 money's worth out of it. Then replace it with a new one again and still only be a fraction of money out that he would with a more expensive exhaust.