Since your rear has nonprovisions for a snubber, and adding one is probably a bit tricky... and IMO, adding it to the body upside down is not a great idea...
Use Cal Tracks instead of a snubber. It will be or can be more effective than a snubber and easier to adjust. They are more expensive though.
I never thot of it, but if done and located properly , it might work. Special reinforcement needed on the body, w/ the right clearance, and a brutal bumper, hitting the rear housing in just the right place.
We used to tear them up and quit tryin to run one, wasn`t really needed w/ super stock springs, back then.
