Performance Upgrade: Upgrade your 1964-74 GM A/F/X body vehicle to an 11" disc brake with this kit, improving your vehicle's stopping performance significantly. Vehicle Compatibility: This brake kit fits 1964-72 Chevelle, Malibu, El Camino, 1967-69 Camaro, Firebird, and 1968-74 Nova, Ventura, Omega, Apollo vehicles. It must be used with stock style disc brake spindles and 15" or larger disc brake compatible wheels. Advanced Features: The brake kit comes with '69-'77 GM style calipers with a larger 2-3/4" bore and a 7/16"-20 inlet, ensuring efficient braking. Comprehensive Kit: The kit includes a new 11" vented iron rotor with the original 5 on 4-3/4" wheel bolt pattern and 7/16" studs, plus all necessary components such as caliper brackets, brake pads, backing plates, and rubber brake lines, and all necessary bearings, seals, and hardware for a complete, easy installation. Installation Note: This brake kit is not compatible with 2" dropped spindles or stock drum brake spindles. For A-Body Compatible with Oldsmobile (Cutlass, 442), Compatible with Pontiac (GTO, Lemans) or Compatible with Buick (Skylark, GS) models, modifications or spindle replacement may be necessary for fitment. Bolt on kit adds serious stopping power for 1964-72 GM A-Body, 1967-69 GM F-Body and 1968-74 X-Body. Stock-style disc brake spindles 91034900 recommended when replacing stock drum brakes. New 11" vented iron rotor with original 5 on 4-3/4" wheel bolt pattern and 7/16" studs. Calipers feature larger 2-3/4" bore from 1969-77 GM midsize cars with 7/16"-20 inlet. Includes everything needed to complete install. Use with 15" or larger disc brake compatible wheels. An Inexpensive Disc Brake Conversion for Serious Stopping Power In the 60’s and early 70’s, drum brakes were generally considered to be just fine for safely halting a muscle car in traffic. Disc brakes were a luxurious, extra-cost option that often only ended up under performance packages like the Super Sport or Z/28. But as time has marched on, we’ve grown accustomed to our late models with electronically assisted disc brakes on all four corners that will stop on a dime. Meanwhile, a trip across town in that old drum brake equipped Chevelle, Nova, or Camaro is an exercise in constant vigilance and planning ahead for a panic stop. It’s almost enough to take the fun out of the drive. It doesn’t take much to drastically improve on the 19th century design of those drum brakes, especially in the front. A simple, inexpensive front disc brake upgrade using OE-style components can make a night and day difference when compared to those old, fading drums. That’s where this kit fits in. While there are bigger, more trick brake kits out there, the Speedway Motors ’64-’74 GM Car Front Disc Brake Kits comes with everything you need to ditch the drums and add a disc kit to keep your GM A/F/X body car safe in modern traffic at a price that doesn’t break the piggy bank. Complete Kit Bolts on To Stock Disc Brake Spindles This brake kit comes complete with everything needed to complete the install