I have the jba discos. They came with a washer to get rid of that gap. There's no noise but need a tool to take them on and off. I ended up notching a groove in the easher for the pins. This made it easy to take on and off and still being able to get rid of the noise.

Jba also made rear links. Not discos. And i think he was thinking about making a rear link extender that just bolts on the stock rear link to cut the cost