Yea so I got fucked big time, mostly my own fault b/c i did not research the exhaust. It wont work with the STi bumper unless you cut it up or use the WRX Bumper B/C of the angle of the muffler. I tried to fit it on and theres no way. I wanted to cry So here it is on Chris WRX, the fitment is perfect you can shake the hell out of it with the oem hangars and not get a sound. Its a tight fit near the bumper but it does not touch any of it. Now if i can find the right part number this time it will be mine.