Jim, thanks for the tip. And congratulations on you 1000th post.
I just wanted to add that, because of the work I've done in the automotive industry, I'm intimately acquainted with exhaust system materials. Timevalve uses the best material available on the market (short of titanium). For premium exhausts, most manufacturers use 409 stainless steel. Though 409 is better than aluminized steel....it's not nearly as good as the 304 stainless steel Timevalve uses.
95 E320 Cabriolet, 131K