I just had mine relined- 47 1.5 ton. The old ones were good but contaminated with oil or fluid. They were uneven side to side, one side lacked power. They were asbestos originals.
Getting them relined was NZD$284- about US$180. I got the drums machined and then they radius the new shoes to match the drums. Straight off they are better and they have yet to wear in.
I talked to the guy and he said that the modern liner is just a generic replacement for asbestos or old shoes, and has a similar friction coefficient. Said it was the same or easier on the drums.
Sorry I do not know where to get parts and I did not notice any part number on my shoes.
