revolver shackles....I built a set and put some locks on them and they work great. The way the spring drops is amazing. On the road in the open they are a little hairy to drive but still very possible. I wouldn't let anyone else drive them open but I'm very picky about who drives my toys.
I've since taken off the SOA and gone back to SUA due to the legal issues around "home made" lifts. They are getting strict around here and I don't want to loose my zuke tags.
I don't lock them with the SUA on the road and they don't give me any bad effects at all. The locks are just bolts to make them so they don't open. The pics bellow do not have the locks. If you don't have access to machine tools then just buy them.





Just used samurai spring bushings and it works great. I even put some on the back too.