Product updated on 2021-01-08, McGaughys - MCG:63150, 1963-70 C-10,13 inch Front Disc Kit w/2.5 inch Spindles **cross drilled** (5 on 4.75 inch) (must use 17 inch+ rims), , McGaughys started off manufacturing suspension parts for classic Chevy cars but over the years they have evolved into a full line suspension manufacturer including Lowering Suspension, Lift Kits as well as Classic Car Suspension parts.