Schmity27

So i bought a rear diffuser off of ebay and it came in today and i tried to put it on and well it doesnt fit! i put it next to my OEM diffuser and its really flat. Also the line at the top of it doesnt look that good either. The picture on ebay made it look better! plus it said nothing needed to be modified but it doesnt the two holes on each side for the screws and I also had to take the riveted bracket off the OEM to the CF one! But on the plus side i can return it for a refund!