Manual sbp front disc conversion feedback

I haven't used it, but a word of caution: that looks like a later A body brake setup that has had the rotors drilled to the 4" bolt circle. The potential problem I see with that is if the hubs haven't also been turned down to the small bolt circle center register size, there's no way they will work with any factory wheels or many aftermarket ones, either. I don't know if there's enough meat in the hubs to safely have them turned down yourself, either. Not poo-pooing them, just be aware... I'm sure somebody can clarify this.