Hello everyone! I own a 2006 Ser Spec V. New motor from nissan it now has 3200 miles I have custom header and exhaust from Red Run garage in Ehprata,Pa. header size is 2 1/4 i think?"it was a very tight fit,alt in the way" but exhaust is 2 3/4 inch. also have a custom cold air intake. Its lowerd. what else? oh 224/45/17s on my stock 6 spoke rims. thats about it for now. i love her to death!!!!