yes, LA304 & LA364. The dealer may ask you what machine it's going on and if you mention the LA364/B2920, they'll probably have no advice on yes or no.
Here's how I figured out that the SSQA adapter from the new (at the time) 524 loader would work on the 504 loader that is on my B3200.
I went to the Kubota site - and started looking up the bucket part numbers. When I found that the Kubota part numbers for the 54" and the 60" buckets were the same - I figured the loader spacing must be the same.
If you want to verify that the SSQA will work on your loader - that is the route I would take.