Dig through the owner profiles here or check out
www.fullsizechevy.com to find pics. The general idea behind linking any vehicle is the same but every type is going to have different obstacles in your way. With the FSC you may be better off running a parallel link on the outside of the rails with a panhard or watts link. That way you will just need to raise but not relocate your tank. You'd have to get pretty creative in order to do a properly triangulated 4 link with the stock tank in place.