Our plenum cover easily snaps into place because of our design using ABS plastic. This fits the LS2 engine only (2005-2007 cars). Shown from the front and back side in the picture. Made in 2 pieces to easily slip under the fuel line. The separation is right where the fuel line lays. This hides the cut, making the cover look like one piece when installed. Installation takes under 10 minutes. This 2 piece kit is designed to snap tightly over top of your stock plenum and held in place with double faced 3M tape.