I want to thank CDLXterra, justblueX, XmtbX00 for giving me their takes on possible exhaust systems. XmtbX00, I was looking for a borla exhaust and had only fount it for the 2000 xterra and not the 2002, would this be a problem? I think this may sway me to go with the calmini or gibson, but who knows, still some time decide and finds what's best, any more ideas and opinions are always welcome. Also, has anyone had any luck finding a place to purchase on-line the K&N FIPK intake as opposed to just the air charger?? Also would the air charger or any intake give mea problem in PA or with voiding the dealership warranty on my car??