Simply measure the distance from your bumpstop the edge of your tire tread on both sides
6L V8 1975 - 1978 GMC Jimmy 400/6
Peterbilt 357 (2000-2002)
7 V8 1976 GMC G35 Rally STX 350/5
7L V8 1979 - 1986 GMC K1500 Base 350/5
1976-1980 Aspen Extreme+ Brake System Front 4141021MG data-acquisition-components Simply measure the distance fromFits 1976 80 Dodge Aspen, 73 74 Challenger, 73 78 Charger, 73 76 Coronet, 73 76 Dart, 78 79 Monoaco & 1973 74 Plymouth Barracuda, 73 76 Duster, 75 78 Fury, 73 75 Roadrunner, 73 74 Satellite, 76 80 Volare w OE Disc Brake Spindles Features: 1 Piece Monoblock, 6 Piston, 6S Caliper Manufactured in Phoenix, AZ CNC Machined from US Sourced 2618 Aluminum Forging Powder Coated Finish Stainless Steel Pistons, Abutments and Noise Suppression Clips Staggered