I have a set of XS racing headers and mid pipe for the VQ35 motor, it more that likely will work with the maxima as well if the exhaust is set up the same. I no longer have the 02 sims for it so you would have to provide your own or just tune them out. This version comes with the "race" cat aka nothing in it so it is louder.There is a very noticeable change in your exhaust note and resembles the 350z. When it is teamed up with an intake, oh does it sound good after install. I did it myself on my lift. Call me with any questions 630-461-0821 Eric. I can ship if you want.