Have a 05 coupe 5at with 125K and the flex pipe was going so I ordered a a m2 performance y-pipe off ebay. It's my beater dd and I'm trying to keep the costs to a min. I know the bolts were rusted so I took it to a muffler shop and they torched it off. There was about an inch discrepancy at the top of the pipe (meaning the width was too small) and after bolting it on, put a little more tension on the flex pipes. Where it connected to the mid-pipe it was again 1 inch too short and after installing the left muffler tip shifted down towards the ground half an inch or so. I'd say the fitment is ok if your looking for a cheap replacement part but if you want a better build and fitment megan would probably be better imho. I also found half the material inside the driver's side cat were gone and Berks hfcs are coming in this afternoon. Performance wise, it's just like what everyone said...not a huge performance gain but the car seems to pull harder 2-3.5K and it's 5% louder with a slightly throatier and deep sound. Overall, one of my cheapest and value oriented mod. Looking forward to the Berks though...needed something to do on the g as it's been a while.