Unfortunately just saying "LA1055 loader" does not help. Assuming you have the SSQA (skid steer quick attach) bucket that comes off with the two black handles, there are still a few different buckets you might have.
I will "guess" that your bucket is like the first one we cover on
THIS page at the website, but it has a wider top so you don't need the extra metal shim piece, just our regular Bolt-On Hooks with 1-3/4" bolts instead of the normal 1-1/2" bolts.
Here is an example of what I think you may have:
This bucket will not use the welded spacers, bolting the parts directly to the heavy top plate is the strongest.
If you have any pictures of your machine, I could help better here or directly via email.
boltonhooks@gmail.com