Drop spindle 58-64 / 65-70 2" disc front PRDrop spindle 58 64 & 65 70 2" disc front PR For use with now normal disc brake conversions.. a simple way to lower the front 2" (50mm) Will work with 65 70 the factory style 11 inch disc brake conversions and uses then the same rotor and brearings and steering arm. IF using on a 58 64 that is fitted with the same Factory GM style 11 inch disc conversion.. it will need another type of steering arm.. enquire. If used on any of those cars with larger the