Ok I have a question, did a search but couldnt get anything for aluminum exhausts. Ok well I was looking into replacing my cats and just upgrading to some high flow cats. Now my question is what are the pros a cons of an aluminized exhaust system, pretty much just the h-pipe though. I found a good priced high flow catted H but its aluminized so I am wondering if they go bad quick or something? Thanks for the help.