I have just purchases a kit from Gabe. The kit is very comprehensive and well put together and as always he is very helpful. I have also used Wilwood calipers before and had them approved by an engineers for use on public roads with no problems at all. Great choice of pads and compounds at a very low cost. They don't have to be ADR approved to be used on the road. The RX 7 calipers themselves are not ADR approved only the vehicle itself. The engineer I used didn't look twice at them only my mounting brackets.
Cheers
Todd