This scoop is designed to give more square inch area on the front of the JBR carbon fiber injector catching more air pushing it into the supercharger making the racer more boost which as we all now makes for better et's and bigger mile per hour. Simple to install simply remove the screws out of the injector that hold the butterfly faceplate on slide the lip over the alum. faceplate put a dab of loctite on the new screws provided install and you are done. Lip weights two pounds and in most cases has given the racer one to two pounds boost with it installed. Lip is clearanced for fuel lines going into the barrel valve. Lip measures 20.50" x 9.00" and includes new grade eight steel mounting hardware with alum. anodized washers. Fits all JBR injectors that have 4.750" x 4.125" butterflies.