Here we have a watts linkage for the Jag rear carriers. It has been fitted to 3 different frames now but is set up to go right into a Contemporary Cobra.
It has a fabricated upper link bracket that bolts on to the carrier. Bronze shimmed needle roller bearing on a billet top link. Heim jointed 1/2" radius rods to steel gusseted brackets that are set in place with a provided fixture that you can easily weld to your frame. There is a good step by step thread which is basically an online installation manual. These work really well in fat tired, high HP Cobra with Jag installs that have little or no forward rearward support on the upper or axle end of the carrier.