Welcome to Big R Motorsports. I am offering custom fuel rails for the box style intakes. It replaces the leaking stock units and also delivers more fuel. It is a Dash 8 rail and unlike the other fuel rails on the market, my rail will also allow you to use either your stock schrader valve or your aftermarket fuel pressure gauge in a convenient viewing location. You can either run fuel line from end to end, or if there is no room, you can plug one end and use secondary port provided.