1955-58 Full size Chevy Front Wilwood Disc Brake Kit, Red Rear Disc Brake Conversion. Dual Piston Wilwood RED Front Calipers 120-10937 -RD (MKD-52 Brake Pads). Why Wilwood?. Forged billet aluminum bodies, stainless steel pistons, and competition style high-temperature seals put and end to the rust, bore pitting, and seal failures that plague the OE caliper design.