Aren't the "Bullit" rails the same as stock GT rails? The main difference would be that aftermarket rails are about twice as thick due to the stock rail's flatter design. I made 462rwhp with the stock fuel rails and lines, and I'd imagine that close to 500 to the wheels would be possible.Centaur said:I have bullitt rails right now, is there any appreciable difference between them and aftermarket rails? What are bullitt rails rated at (flow and hp rating)? Do I really need aftermarket rails with 550 rwhp (planned)?
Different question.....how many rwhp can I safely run with stock fuel lines (I think they're 3/8")