looks like they bolt on using 2 bolts... if this is correct i would says to stay away
you mean the same system that gm has been using for something like 45 years with nary an issue?
in the end what disc brake system you choose is up to you. i have used several over the years and for the street they are all good. the two pin gm system is easy to service, and super reliable. just remember to grease the pins once in a while.
the original factory ford system used four piston calipers, also quite reliable, but harder to service.
if you want to fill those 17" wheels with big brakes, check out mustang steve and vintage venom. these use the ford factory two piston cobra calipers.
if your spindles are in good shape, and you are not rebuilding the
suspension, look at systems that bolt on to the stock spindle as you dont have to realign the front
suspension, and you dont run into possible
suspension geometry issues that can crop up, especially with modified
suspension geometry.