Just do it like its done in the default rosters. I get annoyed when i get the updated rosters and I have randy moss lookin like an anorexic or peyton manning looking like a morbidly obese dude. Large and xtra large types with the exception of a few players should only be used on on the big man positions:lineman linebacker fullbacks. and PLZ dont give players like tom brady skinny bodies, just doesnt look right.
Just my opinion but I cant stand the large (hgh) setting, if you look at in in the in game edit screen all it does is make the guys head huge and legs smaller, it seem odd to me. I like the normal, skinny and ex for all my o line and d line.