That's correct. I just never looked for the instruction because here on the forum there was never mentioned that we need material removed to make it fit. I just assumed it's just bold them on. All good everything is fitted including rx7 rear kit with 22v calipers. The only problem I have is locking up . Trying to learn the new setup for now with out bias.
But when there is no lock up the kit works very well. Also I can confirm Rx7 rotors with 22v calipers do clear with 16" GTR wheels.