this is his side profile at the moment, I based him off Melee YL and those kids from ordon: http://img202.imageshack.us/img202/4702/71037488.png @DMN: Like camelot said, those are done using size mod codes. I'm not going to be changing his body size using vertice editing anyway, my main goal with his body is to make his tunic a lot more YL-esque. (and remove the ripples in his pants, it kinda looks like he has baggy flesh right now)
If you don't intend on continuing your project to "shrink" him into Young Link, do you mind if I take your final product and resize them in hex to be Young Link Sized? I've been meaning to make my Young Link codeset into a vertex hack for quite some time. Maybe we could work together on it.
It's a matter of loading a specific .PAC file moveset via holding down a specific direction on the d-pad while selecting your character. In theory, it'd be quite simple to load FitChar.pac by default, and FitChar1.pac instead if left on the d-pad is held.