A:AnswerThey should no drilling required just a Phillips screwdriver and 10mm open box wrench. Remove old speakers install new ones with new male/female connections
A:AnswerI would say yes, I looked at they layout for a corolla the way the speakers are mounted are close to how a Toyota scion I used these brackets for and they worked perfect, I just used self tapping sheet metal screws to mount the brackets to the door and it worked good