Drill ? 95% of the new set ups don't need drilling at all.All you need most of the time is scrap the paint coat at the closed bolt 'till the metal is fully exposed & attach the ground cable. For instant I removed the rear seat latches,scraped the bolt hole with a drill & sanding stone.Attached the two amps ground cables together & did the same procedure with the capacitor - cable to the front left net hook.