Lug patterns for our conversion kits kits Rotor is 5x 4 ½ Pn# - MDBK834XA - 8 3/4" and Dana Rear Axle Disc Brake Conversion Kit with Cross Drilled & Slotted Rotor & Stainless Braided Hoses, Includes Calipers with NO Parking Brake Cables Provision, 56PC Kit (NON Parking Brake Calipers) This is for all 8 3/4" and Dana Rear Axle Flanges Spacing 5x4 or 5x4.5 bolt pattern. Center flange hole 2.873", see picture 2 for all the measurements and sizes Single Piston Loaded Calipers w/ pads, Caliper Brackets,Rubber Brake Hoses, Hardware Kit, 11" Rotors, Use 15" or larger rims with 5x4 or 5x4.5 bolt pattern Weight 65 lbs, No Parking Brake Provision. Replacement for: 1970-74 E-body , 1967-76 A-body , , Demon, Swinger, , 1966-74 B-body , , , , , , This kit is cross drilled and slotted rotors This kit is with no parking brake provision. This kit uses GM calipers and caliper brackets to make this all work with the rotor. Rotors and calipers are available separate if needed 20 years from now. Inline tube : 1. All Parts are plated so they wont rust. 2. Calipers are Black Powder Coated Painted 3. Comes with every part you will need. 4. 25 year Brand Name in the Car Market. This kit comes with everything you need to install the first time. You have the rotors, Loaded calipers (with carbon Metallic Pads), caliper brackets, hoses, hose clips, axle hose brackets, banjo bolts, axle shims, axle cap and the bolts to hold all together. Everything that is pictured.