Jim Smart
February 7, 2012

Stainless Steel Brakes Corporation was the first to offer disc brake conversion kits for vintage Mustangs more than 25 years ago. This pioneer of safer classic car braking now offers a simple bolt-on four-piston front disc brake conversion kit for Mustang drum brake spindles.

SSBC’s new A120 disc brake conversion kit is a nice reproduction of the original four-piston Kelsey-Hayes front disc brake, which bolts right onto your Mustang’s drum brake spindle without any modifications and fits inside 14- or 15-inch wheels. For under $1,100, the kit comes with 43mm four-piston iron calipers, 11.25-inch unidirectional vented iron rotors on 5x4.5-inch lug pattern hubs, hoses, and plated Grade 8 hardware.

For the safest, most effective braking performance possible, we opted for a power booster and dual master cylinder, also from Stainless Steel Brakes. Vacuum-boosted power minimizes pedal effort. Dual braking provides some form of braking should one of the two systems fail, which will get you safely stopped in an emergency.

We’re doing this conversion on a ’65 Mustang hardtop at Mustangs Etc. in Van Nuys, California. What struck us most about this car is its original status with factory four-wheel power drum brakes sporting four C3AE original brake drums with Ford casting numbers, along with the factory exhaust system and original suspension components. Though none of these items are serviceable, it is amazing to find factory parts on a 46-year-old automobile.

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