Yanmar SX3100 What type of bucket attachment do i have??

[BuilderML]

I have also posted in the Yanmar forum. I would like to know what type of hook up i have for the loader bucket? Whats it called? Does anyone know of a source that could or has made the 3/4" plate that is welded to the bucket? Reason i ask is i would like to make some attachments and be able to weld the 3/4" plate to my attachment so i can keep the same set-up. Or does anyone know of an adapter to convert over to SSQA? Any help or info you guys could give would be very helpful.
Here are some pictures. Thank you