Just note, I'm pretty certain that these headers are much longer in length than the stockies, so the cat itself moves back and the mid-pipe has to be shortened. Can you confirm this for others Gazoom & Danz so they know what's involved with fitment? IZZ-FE you are absolutely correct the headers are alot longer than stock. My car is a 2005 model and the guy at Best mufflers said for my model it is not a direct fit. He said on my model the original engine pipe flange needed to be cut and re welded to the catalytic converter, some models have a flange join at the catalytic converter and no welding required hence direct fit. Some pic of the header being installed on my car. http://au.toyotaownersclub.com/forums/inde...c=7305&st=0 FYI - I have the stock cat and stock resonator on my car still after that it is 2.25" to the twin loop muffler. I would recommend to get them installed professionally. Also I am pretty sure that Genie/Wildcat doesn't make anything for 2ZZ. Good luck guys