Easiest way go to ford for parts. Get a printout of an exploded view of rear St brakes 05-07.
Start from there. I don't use aftermarket parts. Hit up Steve at tousley ford. He will give u discounted prices and knows what u are trying to do. I just did a St swap on my drum car.
U need disc spindles
Its basically the same as a svt swap but using a smaller rotor. Try searching for that in the search feature in the forum
2013 F-150 FX2 SUPERCAB 5.0 BRIGHT RED. HIDS, NAVIGATION
LEATHER, SONY 700WATT SYSTEM, 9.8 1/8 mile for now stock