Can't really say much about this carbon fiber diffuser and front splitter kit since we don't remember where it was purchased from, but it's most likely some Ebay type.  Front splitters were adhered with double sided tape and unfortunately like many cheap front spoilers the sides didn't seat next to the bumper.  On the other hand the rear diffuser seemed to fit pretty well with no installation issues.  Lastly, the muffler was deleted and an axle back exhaust with "carbon fiber" tips was installed.