Luffy is 40 in this, so that would make Sabo 43 and Dadan 76.
I think that Sabo and Luffy still got some growing in them to go, given their genetics and also the way people grow in this show. As such, they’re both like,,, very tall in this version.
If you have anything One Piece Party or One Piece Academy that you want me to typeset I’ll do it but I CANT TRANSLATE so it must be provided along with the picture (scans preferred)