Want to use a factory style spring with the shock in the factory location of your 1963-1987 C10? QA1 offers front lower control arms for use with stock springs. The arms are made with 12 gauge HSLA steel for increased strength and are powder coated for long-lasting durability. They feature QA1 performance ball joints and low friction, maintenance-free polymer bushings. These arms add stability with 7 degrees of caster when used with QA1 upper control arms for more stability and driveability. These control arms are sold in pairs and include all necessary hardware. Made in the USA.