Kody344

I have a 2003 5.3 vortec that I am rebuilding. I have bought a bigger cam and valve springs, along with long tube headers, Cold air intake, MSD plug wires, and AC Delco iridium spark plugs. I'm going to be running duel exhaust, no cats, and getting a local guy to tune it. I also have the complete rebuild kit for it, since I don't plan on boring the cylinders unless needed. But what else would someone recommend doing? I already have it apart so I'm looking for possibly more add ons to give it some more juice.