Here are the pictures of the BBK which also fits Nissan 350Z
It really has no wear. The rotor pictured is the REAR rotor, it has 32mm which is the spec from new.
The pads in there now are the ones that came with the kit when new.
The front pad , measured, looks like it has seen barely any use.
Also ADDED for sale
Superior auto carbon risers. very nice. The underside has foam padding. Bolts included. As new.
These things cost 50,000 yen made-to-order out of Japan but with 3 month lead time. -- $750 AUD pickup
https://www.rhdjapan.com/superior-auto-creative-rear-wing-high-position-stay-carbon-bnr34.html