I am looking to purchase a used 2000 SH and the previous owner had done some mods to the 'lude. I was concerned that the warranty would be affected by the mods. Some of the mods include DC headers, A Greddy Exhaust, altezza's and some other stuff... Some mechanics told me that I need the original exhaust and headers for the warranty. They have the original exhasut but not the header's the dealer has a bro that would exchange the DC's for a stock 97 headers. I think I should keep them... but I don't want to have my engine blown in a few months and be $hyt out of luck when they tell me the warranty is void.