Hi mate, its basically this caliper,https://trackformula.co.uk/product/ap-racing-pro-5000-r-9660-caliper-18mm-pad/
With brackets and bells from Reyland, http://www.reyland.co.uk/
Then i have a couple of contacts for Discs and pads, used from btcc teams.
I had to get anti rattle springs for the discs as they are floating design and made my own springs for the pads to as they rattle when driving on the road,
Bare in mind this setup is more racecar than road, like no dust seals on the calipers etc, they have got road version calipers called Radical i think.