Just a little advice about your header install. BEFORE you install your headers get under your truck(mainly on the drivers side) and look at the inside of the frame rail. You will see a couple of lines that are attached to the frame rail that need to be moved before your installation. There should be 2 or 3 holes in your frame and the clip that holds those lines is in the bottom hole----it needs to be popped out and moved to the upper most hole. The fuel line is also running along that frame rail and it should also be moved as high as you can get it and it wouldn't hurt to wrap it also. The trans cable needs to be either relocated or wrapped in the header wrap so it doesn't burn the cable, or you can wrap the headers themselves. If you don't do these things before you install your headers you will find that when you either decide to move the lines or wrap them I hope you got little tiny hands cause there ain't much room to work. It sure will save you a lot of pain, skinned knuckles, blood loss and frustration if you do these things BEFORE installation. Don't ask how I figured this out---My problems were all on me--Matt at Moe's told me the same thing I'm telling you, except I didn't get it done---I learned a very valuable lesson.
Jay