need some help figuring out older dodge truck Traction kit

not sure even how-to title this thread but here goes..
there used to be a suspension performance kit for offroad trucks from dodge in the 70-s/80-s?
it mounted on the leaf spring and was angled back towards the frame.
its main purpose was to minimize axle hop and twist.
its basically another shock absorber at a diff angle,it came with brackets shock and bolts.
if i recall,it was like a 119 bucks back in the day?

at one point im pretty sure the tech guy on the mopar magazine actually posted and mentioned it as well,as an upgrade for our cars,
but i of course cannot find the magazine article and it wasnt a very big blurb either.
i think Rod Hall of offroad fame used this setup on his trucks too.

does anyone know what im looking for and has maybe an old DC catalog that shows it?
a part number or exploded view?

Many Thanks in advance,ive been searching and its like a needle in a haystack,
everything under the sun comes up but what im looking for.

Firm feel sells the car version.

TY,can you link me to it?
ive found newer systems that can be used,But
seems like just the brackets alone are 355 bucks which is a bit much.

im boiling my brain trying to recall if it was randy bolig or Ed that posted that article.
cant find anything out there and i know ive seen it.

heres a pic of a similar item.
the system im looking for is identical almost to what R/T posted,
but i need it for a 1977 dodge Truck.
note that R/T-s pic shows a shocked setup which is what im after.

I believe Ehrenberg from Mopar Action recommended what you're looking for.
It was listed in the MP catalog in the truck section, but it worked as well for A bodies (he used it on the brick valiant). If Firm Feel has it listed for an A body, that'd be the one to use, to my way of thinking.