Hotchkis Sport Suspension 1820 1958 - 1964 Chevrolet B - Body Rear Suspension Package w Single Upper Arm. Improve handling and traction on your 58 - 64 Chevrolet B - body by upgrading your flimsy stock suspension. Includes fabricated lower trailing arms adjustable upper trailing arm (1) adjustable pan hard rod and hardware. Note This package has one (1) upper trailing arm. Vehicles equipped with two (2) upper arms should use part 1813.