My 04 Lariat S'Crew also took longer to stop than I liked and the pedal was soft. As I plan to install a supercharger soon I wanted to make the I could stop the truck before making it go any faster. My solution was to install the AP Racing front brake system from Stillen. Huge six piston calipers that clamp down on monsterous 15" slotted and drilled ventilated rotors.

They weren't cheap - over $3K but this truck stops right NOW! The pedal is very firm (a nice change) probably due, in part, to the included braided stainless brake lines and they look incredible too. I can't say enough about the quality of the kit.