[Tx Firefighter]

FrenchBlue, that is a shim you're seeing, but not a pinion angle shim.

I'm using an ECE susper track bar on this truck. It mounts between the axle and the trailing arm on the right side, so they give you the shim for the left side to make up for the bracket on the right side.

I hope this is clear, what I'm saying...

By the way, I set the axle pinion angle when I welded the axle saddles to the rearend. That's a 75 model leaf spring axle that I ground clean and converted to coil spring saddles for this truck.