ok, a friend and I are thinking about swapping my HKS Dragger for his HKS Hiper. I mean I love the not so loud tone of the Dragger, but the Hiper with its ackward angle gives the IS a more aggressive back end plus the HP's are a little higher. Anyways the thing is he doesnt have the Hiper yet, but he is going to buy it used from a member off the board, but was told used exhausts wears out?? I have no idea what this means, but if its a HKS I wouldnt think down the road it would. I have had mine for 8 months and everything is great, but he is a little optimistic. Any insight to the wearing out question???? Should he not worry??? I mean I paid over 500 for mine and hell it better not wear out!!!