741 - crush sleeve and shims?

thanks for clarification Cass, yes I see now, sorry I did not notice that popup as they are very small and I am not usually looking for, or tuned in to looking for popups. What happened is that when I clicked on the 741 selection the left hand side picture came up with the crush tube picture. And also same picture for 742. That's what confused me. So I see now that it is for the 489. The next picture I looked at had different sized shims and as I didn't see the popup, I was wondering what they was for. I assume one set is pinion preload and other shims are for setting the side loads.

As I think I explained, my 741 was is all newly rebuilt (albeit 7-8 years ago). I had supplied the assembler with the full kit, I think I bought it from Mancini Racing at the time. So I was just needing shims only, to redo the pinion preload which is way too tight. So I don't need all the other things, just the shims to give to the diff shop, as they will have all the marking paint etc. I see there are shims, sets of 6 or 7 shims on ebay there for $10-15, so I will look at those.