Slant 225 motor codes from VIN and trans mating questions

I'm thinking about having a used motor crated to my home. I'm looking for '81+ 2bbl for my daily driver 1980 truck with A727. I've looked over the chart from Allpar and I'm confused about all the 225 types. There are 1bbl, 2bbl, special order, heavy duty, high performance and standard. Does anyone here know what all this means?
Chrysler VIN Decoding, 1926 - 2005: Dodge, Plymouth...

My other question is what issues might I have mating a motor from a manual trans to my A727?