Hotchkis Sport Suspension 1821 1967 - 1970 Chevrolet B - Body Rear Suspension Package w Single Upper Arm. Improve handling and traction on your 67 - 70 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 1822.