2004 Silverado Upgrade
 

Hey guys new here. I have a 2004 Silverado Ext cab 2wd, with the 5.3, 115,255 miles, 3 inch Fabtech leveling kit, K&N cold air intake, super chips flaqpak, 3.73 rear end, flowmaster 40 exhaust (upgrading to something better, dont know what yet lol.) and 20 inch Ultra Lightning wheels with LT285/55R20 Nitto Terra Grappers. I was thinking about adding a supercharger and a newer tranny but i dont know what to upgrade it to? Any suggestions? or something to make it a wee bit faster? Thanks.

You can have the stock tranny upgraded with better internal parts; such as, sunshell beast, shift kit, servos, etc... Other than that maybe a tune instead of the handheld. And just to point out something. You and I are running basically teh same setup. However I am running a clone Flowmaster and I also have underdrive pulleys. I also bypassed the TB heat tube so my truck is only drawing in cold air with out being heated up. And my truck is not leveled and I am running 20's. Take a look at my signature at teh bottom of my post.