i cant recall the exact name of it but there used to be a mopar performance kit for the rear axle.
they used it on the rod hall offroad trucks,but we used to put them on the cars as well.
it was an extra shock setup for the 70-s thru 80-s trucks and came with brackets and a shock for each side.
one end gets mounted to the frame and other to the axle.
it helps control the axle windup.
at some point Eberg had it on either the green brick or the duster and had a brief article on it.
or you could ladder bar it,using this simple kit which btw is dirt cheap,but uses heim joint ends.
Tuff Country Traction Bars | SuspensionConnection.com
or make up your own kit,using ideas like this setup which makes this claim
"By using rubber isolated ends we have eliminated the squeaking and binding that can be attributed to heim joint style ends"
DHD 600-657 Super Heavy Duty Duramax Traction Bar Kit (Universal)