This is a good used set of Wilwood Integra 6 piston, billet aluminum, radial mount differential, 32mm / 32mm / 41mm Thermloc 6 piston for 328mm x 32-35mm rotors w/ a 15" wheel or larger.
 Part #120-5690FS & #120-5691FS. Pad shape is PFC  #7772, #7775, #7771 & #7770.  Because of their compact size, these are super stoppers on lighter cars and imports!