I am sorry but I do not own any Eight-G garments and even if I do, it would be a bit difficult to compare since I am comfortable in Japanese cut and the American cut is usually too long and too big for me. I would trust the Japanese with the actual measurements on their sites which in my experience have mostly been spot on.
I guess you may have to worry about the usual high armhole and narrow sleeves.
Thanks for the info.
I have a long torso and short legs so I think my body type can translate well into Japanese sizing. I am only 5' 8" also.
Japanese sizing is new to me so it can be overwhelming. I can't translate the pants measurement symbols but have it somewhat figured out for shirts or jackets I think.
Hopefully someone who speaks Japanese can translate but I will start my own thread with all of that.