From my experience with them years ago when you buy their "kits" you only get a caliper bracket and nothing else. You do get a parts list and then buy everything yourself including bearings, seals, calipers and rotors which in my case all came from different OEM sources. So yes its all bearing and race swapping, no adapters or spacers but as noted, but not in my case for a '56 Pontiac, occasionally machining of the stock parts is necessary.
I bought the caliper Scarebird bracket to fit on my Mustang from a friend. It uses S-10 calipers and Ranger rotors and Cadillac front brake hoses. I had to buy a pair of special made bushings/spacers from Scarebird (they weren't cheap) to fit the spindle/rotor combo. I really didn't save any money over using available FoMoCo parts since I needed the spacers to make it all work. Oh Well...Hope this helps 6sally6