Quote Originally Posted by TdmayfieldIV View Post
I could be wrong here but I don't think you need to upgrade anything, just fix what is wrong. Doesn't your pedal go all the way to the floor randomly when you are driving without braking at all?
thats your brakes that do that!

Sparling, as everyone said get the air out and if you still arent happy you can switch to the f-350 booster and master cylinder