Smash 4 shadow assist trophy model over sonic

[shadowtheboss]

Hey can anyone convert shadow' s assist trophy model to work with sonic's bones?  I've been wanting to use the assist trophy model over sonic but it's not rigged right can someone do this for me please?

[Merry Selke]

I have my iso of brawl....but i got about 2 hours in constantly watching a video...i cant figure out how to install inifnite to it.. What can i do?