Micahdean, my 06 setup with Sean Morley's jet kit and with a Marks SS 4/2 header w/ 14" exhaust was similar to leroycp's above, but with a couple differences based on my trial & error approach since I had no dyno access. Here's what I ended up with: #40 pilot fuel jet, 90 PAJ1, 170 PAJ2, 160...