rear disc?
I found this but I still need to do a bit more research...
Ford Racing 5-Lug Rear Truck Axle Disc Brake Conversion Kits
http://store.summitracing.com/egnsea...5&autoview=sku
Ford Racing 5-Lug Rear Truck Axle Disc Brake Conversion Kits
http://store.summitracing.com/egnsea...5&autoview=sku
I found out after some research that the rear disc off of a explorer will bolt upto the f150 axels. Just yank all the brake hardware off and install on the truck rear. The only then you really need to tweek is the rotors and that you have to drill out the corret bolt pattern. Also the E-brack cable will have to be custom.

