I have never tried to install one. But if for sure the pads are not correct, then you will have to remove them and reweld in the correct position, with attention to proper pinion angle.
I've seen new pads offered at the truck parts places.

Kicking self for selling off my Taskforce trucks.
Still looking for an LCF or conventional big bolt in decent shape.


As of 10-26-2022, A 55.2 Taskforce long bed now the work begins