It does not fit w/all styles of headers. I haven't installed mine yet. I have a/c and atr headers. I'm considering using the V-band flanges between the d/p and the test pipe for easier install and removal.
yeah Keith got it to work with A/C im runnin T/A SS headers. im stoked to hear how it sounds ... did it change the deepness of the exhaust note ? Do you have and videos driving it ?