Hi guys! :D
There is a modified ROM called HSF2 ++ that was created by a person named yumeji.
If successful hacking on the original HSF2 (040202) at the yumeji site,
True GOUKI and the first 4 BOSS (M. BISON, BALROG, SAGAT, VEGA)
It will be usable.
https://ux.getuploader.com/yumeji/...