QA1 68-70 GM B-Body Upper Adjustable Tubular Trailing ArmsThese trailing arms for 68 70 Chevy B Body offer an immediate suspension upgrade. All upper tubular and lower boxed trailing arms use polyurethane bushings on both ends, while upper adjustable and lower tubular trailing arms use a spherical ball or rod end assembly on the chassis end to eliminate bushing bind, allowing the suspension to move smoother for better control. This keeps the tires planted firmly on the ground for improved traction and a more