YUP, 4-1. Fitment was not an issue at all. EGR pipe lined up perfectly, lined up perfectly on the head as well as at the midpipe.
I did just remove it though due to the frequencey of the drone at highway speeds when combined with the magnaflow. The tone it hit was just right to give my wife a headache, so, i am stock again.
Another problem i had with the OBX is if your rear motor mount is wearing or worn, REPLACE IT!! Cause, with the stock header/cat setup, there is a bracket that is holding the precat in place. The OBX does not have that so it rattles the entire exhaust setup. If you've got a new good motor mount, it shouldn't be an issue
alrights cool thanks dude that helps
and krap i need new motor mounts