i didn't realize how thick what i wrote seems. thanks for showing me that.
in my kinda of off way of writing, i meant to ask more about what main parts like the carb,top end,bottom end from the nu50, na50, pa50 and otheres from this time period, are mostly interchangeable. i noticed that exhaust pipes will fit between a few of them, but i don't know about all of them.
then from scouring parts schematics explosions, i am quite impressed to see a lot of the small parts are interchangable, some wiring stuff like a flasher relay i replaced is interchangable with a bunch of honda from that period.
this is more or less what i meant.