Disc Brake Conversion, Rear - GM Car 10-12 Bolt, 11" Rotors 1955-59 GM Truck Chassis Static spring rate of these

Static spring rate of these rear coils starts at 950lbs

Our front coil-over conversion kit uses Aldan Phantom Series single adjustable coilovers deliver superior handling & ride quality for a drastic improvement over stock suspension

This kit also includes upper shock mounts so you can upgrade to conventional shock absorbers

Black Out Series POL or Wilwood power brake conversion mounts in the factory location

5 Bolt Pattern 12" Rotors (5 x 5

Disc Brake Conversion, Rear - GM Car 10-12 Bolt, 11" Rotors 1955-59 GM Truck Chassis Static spring rate of theseDisc Brake Conversion Kit, GM 10 12 Bolt Rearend, 11" Rotors 11" vented Rotors (5 x 4. 75" and 5 x 4. 5" bolt pattern) GM Calipers (with brake pads) Brake Hoses Banjo Bolts Caliper Mounting Brackets All necessary hardware