Dialed in, I think you should do some research before you start bashing on people that are trying to help. The guys that have posted so far are some of the most informative on the 6.4 platform. I'd junk the ported rails. People have had issues with surging after installing them, and honestly I doubt they do anything at all. With how tiny the orifices are in other parts of the fuel system, the rails are the least of the issue. I had rails on my 08 and they cause a pretty annoying surging issue at 55-60mph with a Spartan tuner. I have stock rails on my current set up, and twice the power... works fine.