If you have BBP wheels already the best way to go is to use the factory 73+ disk brakes. You can buy everything you need from DoctorDiff, including the master cylinder, combination valve and any brake lines you might need.
You get everything you need and replace the weaker 9" drum spindles with the improved later disk spindles. Not only that, but all the parts are Mopar and intended to work together. The Scarebird kit uses different makes/models of brake stuff together. Not saying it doesn't work, but, some of those parts were never designed to be used together. The 73+ mopar disks are factory designed, tested, and proven.
