Same calipers used in Spec Miata, car is light. When I did brakes when I first got mine, I asked my neighbor for advice, he being SCCA CFR Spec Miata champion. He said stock calipers. I did rebuilt calipers, slotted rotors, Porterfield R4S pads, stainless lines and FM master cylinder brace. Daily driven and once a year, MATG. You've got a few months to ruminate. Aloha.