Rubber Pad on 8 3/4 Spring setup?
Here is a link to this product...
With a HUGE caveat... these are for 1070-81 GM F body cars (Firebird, Camaro). I'm not trying to imply that these will work on a Mopar leaf spring. They
might, but I'm not saying that they will. I only included that pic to ask if that is what the OP was talking about.
In the OP's pics, it looks like there is only a pad on the lower side of the axle, unless I'm seeing it wrong.
Looking at Jimacuda's pics, these 2 sets might be a possible fit...
Rear Leaf Spring Pads - Chevrolet Camaro - 3.6113
3.6112 | Chevrolet Camaro | Multi-Leaf Rear Spring Pads | Energy
ONCE AGAIN, I AM NOT SAYING THAT THESE WILL WORK WITH A MOPAR LEAF SPRING WITHOUT SOME SORT OF MODIFICATION!!!