[joe_padavano]

I've not used the Scarebird parts personally, so I can't comment one way or the other.

I do want to suggest an alternative, which is the currently available repro A-body caliper brackets. These seem to go in the $40 range on ebay. The 64-72 A-body drum and disc spindles are identical except for the upper bolt (there are three bolts holding the backing plate to the spindle, two of which are used to hold the caliper bracket in the factory configuration). You can have your drum spindles drilled and tapped for this larger bolt at any competent machine shop (or do it yourself with the proper tools). Now you can use readily available stock rotors and calipers (still available at all auto parts stores). You'll need a new master cylinder, proportioning valve, hoses, and hose brackets in either case.