Paragon hydraulic transmission

This is my transmission that is behind my 327F
I have an operation s manual

I also have a mechanics guide

My question is is my trans a model P 300is their a difference between the model 283 and what I have?

Just trying to figure out what is the correct paperwork to use for my transmission sorry for any confusion

Your transmission is in the P3 300 series and as the tag says a model 31 – R. It’s a very good transmission and there are still are parts available for it