The Detroit Speed Speed Kit 1 Rear Suspension Kit is a terrific way to upgrade the rear suspension on the 1978-1988 G-body applications. Detroit Speed's unique G-body rear trailing links incorporate our patented Swivel-Link™ system. These unique trailing arms eliminate bind allowing the rear suspension to fully articulate without the use of noisy spherical rod ends. The Swivel-Link™ Rear Trailing Links allow for easy pinion angle adjustment for improved traction and lower driveline vibrations. With the Swivel-Links™ pinion angle and/or wheelbase can be adjusted without unbolting the link from the car. The Detroit Speed Swivel Link Rear Suspension Kit is a terrific way to upgrade the rear suspension on the 1978-1988 G-body applications.