If you have a second vehicle, I'd suggest removing one front and one rear shock before you head to the parts store, especially if you have an '03 Silverado.....kinda messes with your day when you have to call a friend to come get you and bring you, the wrong shocks, and the old shocks back down to NAPA. And if you are going to NAPA don't forget your AAA card 'cause you get a discount.