I have never posted on a forum before yet I have found an enormous amount of info here when I have needed it. I own a 2003 z1000 and recently after a few years of being tired of the hum drum look took out a torch and a knife and entered the land of no return. Started by cutting out my air box because I saw the potential look I felt I could achieve. Pulled all my smog off and removed my exhaust. Yanked my pegs and levers and ended up at 4am with a stripped bike hanging from tie straps in the garage. I shopped eBay and read forums. I replaced my header with a 01 zx9 d&d header and canister and mid pipe off a gsxr 1000. I spent enough time on a 7-11 back in the day to justify the gxr pipe on my kawi. Ordered some individual k&n filters mounting them directly on my throttle bodies. K&n crank case and smog plate inlets. PcIII and billet rear sets. Big plans for my girl this winter and having a good time as I go. Lots of thumbs ups every time I ride.