Brake System – Dynalite – Front – 4 Piston Caliper – 12 in Drilled / Slotted Iron Rotor – Offset – Aluminum – Black – For GM B-Body / F-Body / X-Body 1979-90 – Kit. Wilwood 180-0056 Cotter Pins 1/8 x 3.5in Steel Zinc Plated Dynalite Caliper 10pc.