Save money by sourcing your own BBK. This kit was designed around the Wilwood Superlite caliper and 325x32mm AP rotors. All you would need after this kit are calipers, rotors, pads, and lines. MUCH cheaper than buying the entire kit off the shelf.

More info and links to buy parts are located in this S2Ki link:

https://www.s2ki.com/forums/s2000-racing-competition-11/baero-bbk-do-yourself-wilwood-kit-group-buy-1196388/

This is a preorder for Batch 2. Expect 1-2 months of lead time (usually much sooner than that).