Email him. I emailed him my questions about the front disc kit and I had a great response in 2hrs. His website sucks, but the support seems great.
I'm firmly convinced that the Scarebird front disc setup has the granada swap beat 5 ways from sunday. All the parts are cheaper, and it's something like $150 cheaper than the granada swap, with all new parts, depending on what you'd pay for the intial granada pieces. Its also $225 cheaper than degins new granada stuff.
For the front disc kit:
uses mid 80s s10 4x4 calipers @11ea from rockauto
uses 68-69 Mustang rotors @38ea from rockauto
uses mid 80s Eldorado lines @ 14ea from rockauto
uses vintage ford MC @ 20 from rockauto
uses GM pads @ 15 from rockauto
uses the scarebird brackets @ $110
Bolt on, no hack converstion unlike the R&C RC132 kit, which is similar. No change in track width.
HTH
--Kyle
PS I believe the rear disc kit uses GM parts as well. For those of you who object to GM parts on a Ford, cry me a river, it's not like I'm dropping a 350 in the thing