Looking for a great front brake upgrade for your GM truck? Classic Industries® has the answer.This system is a true bolt-on that mounts to the OEM brake spindles and includes a 8 Dual Power Brake Booster Combo master cylinder and proportioning valve so you can select the correct combination (disc/drum or disc/disc)Set includes:8 dual power brake boosterMaster cylinderProportioning valve12 drilled and slotted rotors with 6 x 5-1/2 bolt pattern Front calipers with padsCaliper mounting braketsRubber flex hosesBearings and sealsSpindle nuts washers and dust caps Mounting hardware Requires 15 or larger wheels.Photo for illustration purposes only set contents may vary. Additional parts may be needed for installation.Important: Not for use with drop spindles.Note: Shipped overweight.