I used existing plastic bottom bolts so I placed 5/16 bolts and locknuts that were in the garage and made the template out of the box they came in started with the bottom screws at the bottom and made 2 additional holes with a 5/16 drill bit. Yes removing the tires made the job easier but looks nice on my 2010 F150. I'm happy and that means they are universal front and back so I didn't expect it to be an exact fit.