The Detroit Speed Front Speed Kit 1 is designed to improve the handling and performance of your 1967-1970 Chevrolet/GMC C10/C15 Truck while lowering the front ride height by 4.50-inches. The Speed Kit includes 2.00-inch drop coil springs and shocks and forged aluminum drop spindles with forged steel steering arms. The spindles feature truck hub pack wheel bearings with dual 5 x 5" or 5 x 4-3/4" bolt pattern. The hub bearings are designed to accept the OE-style GMT800 (1999-2006) Silverado brakes, allowing stock or aftermarket brake options.