I bought an 04 wrangler never had one.
So I had to put new exhaust(pain in the butt) header back 4 o2 sensors( the guy chose to take them out and put a header in that was not right) I had to cut the old header off and all the rest also. So after many cuts burns and back ache and $1000 plus I have all his screw ups fixed. (lights where also screwed up) And can start with my mods
Just venting love the forum...I can only blame myself inpulse buying good deal even after all those headace. I am know well versed in 04 california emision wranglers