Porterfield Brake Shoes for 1965 FORD MUSTANG V8 w/Front Drums Compound:R-4 Do I need to drill

Do I need to drill holes in my bumper to install this

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CP Pistons Piston Sets - Forged - 8cyl S9861 CP Piston & Ring Set for Mustang 4

Lightweight aluminum construction reduces unsprung weight while the lock feature resists vibration-induced loosening during hard driving

Porterfield Brake Shoes for 1965 FORD MUSTANG V8 w/Front Drums Compound:R-4 Do I need to drillPorterfield Brake Shoes for 1965 FORD MUSTANG V8 w Front Drums Porterfield R4 Porterfield R4 Carbon Kevlar based brake pads were fully designed for heavy duty extreme motorsports use. Its one of the the few true motorsports competition pads available on the market today. The carbon based semi metallic R4 brake material allows the brake pad to absorb huge amounts of heat and dissipate it quickly and evenly over time. The Carbon Kevlar material also