lol used header...still looks to be in good shape..i hope you looked at them really good before you gave him the money...if you start to clean them with steel wool..it will scrath the piss out of them a then they will look like ass..also you will ned a nes gsket for it to mount up to the cat..if your ca was in your header then you will need to get a high flow cat. but if not then your good, i don't know on your car about the cat thing that was just how it was on mine lol...but if not then your good, also btw it won't throw the CEL for the o2 sensor for a while but it eventually will cause it will burn up stock o2 sensors, you'll eventually need to get a better one like i am having to do lol..but looks ok, but yeah nvm with what i was gonna tell you..i was gonna say if they were brand new stainless then after you clean them be sure to clean them very very god with rubbing alcohol so you can get all the finger prints and grease off of them so it willnot stain, but they are apparently already staind to hell and back..so nvm lol..so i'm guess this guy didn't do that...noobs are funny..should of just bought a new off brand one from ebay..same difference lol