Porterfield Brake Shoes for 1997 GMC C3500 2WD DRW Rear Shoe Compound:R4-S If they're cracked or soft

If they're cracked or soft

Will this bolt directly to my ML without drilling holes

✓ Easy DIY for many

Does this cover need prep or sealing before I install it

Ball-Lock Mechanism – Provides secure

Porterfield Brake Shoes for 1997 GMC C3500 2WD DRW Rear Shoe Compound:R4-S If they're cracked or softPorterfield Brake Shoes for 1997 GMC C3500 2WD DRW Rear Shoe 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