This is a link to Suicide Doors "Super-Pivot" rod ends.
http://www.suicidedoors.com/SuperPiv...th1-18Stud.php
Johnny Joints were discussed on the Pro Touring board here...
http://www.pro-touring.com/forum/sho...t=johnny+joint
These rod ends will free up a 4 link suspension to allow it to pivot in roll but I have no experience with their use or ride quality.
IF I was to build a 4 link rear suspension I would definitely give these things a try... My Model "A" would be a good candidate.
Mark