To achieve the maximum drop on your 60-66 C10 it requires you to cut out your inner fenders. The first time I ever did this was super stressful so i decided to make a template that’s easy to tape on to get the perfect cut that is nice and rounded like your tire. After you make the cut, you can cover the hole with some of the @gmss.fab inner fender covers that bolt on. Finish it off with some of my simple shocks for your hood and you have the clearance you need and a nice finished look. | SIMPLE.