DJ safety blower restraint kit 14.1. This restraint kit includes a SFI approved blower restraint, nylon restraint straps covered in silver fire protectant sleeving, black powder coated steel header brackets, and alum. quick release pins. This restraint can fit all 4-71, with the any top opening. Specify engine, blower and blower manifold when ordering as well as supercharger top inlet opening.