The names are indicative of their designs: a three-link has three links, and a four-link has four links (the Panhard bar or Watt's ... in the world of suspension design. A properly set-up three ...

The four-link is a triangulated design and features a 3⁄4-inch ... about the rear of your Mustang either, as its Canted 4-Bar rear suspension conversion has just what you need.

With this design, lateral movement of the rear end ... and how they can be adjusted for the "degree" of rear steer. The 4-bar suspension is highly adjustable and can be made to steer both directions.