I was thinking of how to do the same thing, I wanna adapt a slink attachment to a kupra body for the psicorp dragon avatar, primarily the legs, hands and body spines. I got some skins for it, but otherwise I need to adapt it to the new body type, I got limited skills with 3D modeling, as in I am clueless as to how to create and rig a model, but I CAN however likely modify pre-existing stuff in much the same way I can do basic modifications to existing code but can't make my own code to save my life or any major changes to existing code outside of basic stuff.