BTW - I have a '04 Lightning that makes right at 550 HP. It has surprised quite a few "fast car" owners over the years...
It's a go fast for sure! What have you done to make it a quick stop? I'm not sure if any of this applies to the '04 Lightening , but after I bought my used '02 I began learning more about the truck's brakes and decided to do what some call the heavy duty "Expedition Upgrade". I chose Centric and bought new Posi-Quiet loaded calipers and also Centric hubs (Power-Slot) that had been Cryo-treated and are supposed to last longer. Having always been an overkill kinda guy, I thought why not go with new parts on all four? I got the same new calipers, pads and cryo-treated hubs for the rear too. The Expedition parts are bolt-on perfect fits for the F150, but they are much more hevay-duty (both rotors and calipers). Maybe not the stopping power of a 'Big Brake" mod, but pretty beefy and a very effective upgrade for much less money.