I made some for PKIgoer and myselfs recreation of Xcelerator. I would say you could use them, but unless you have the exact same angle as us they will most likly prove to be useless. Getting them to look proper and sit at the proper angles would be impossible.
which IMO, would be worse than having them there. Im always an advocate of "If you use 3ds, it better be right". Also when I made them, I didnt break them up into smaller fins, its just one huge solid fin