You could add one in using a program like FLEdit, but unfortunately the cloak itself won't work. Cloaks, player bases, hyperspace modules and jump drives are all dependent on FLHook (a server-side add on) to run properly. You could start up your own server running FLHook and tell your machine to connect to that. That would get you the means to get the thing working, but I'm not sure how you'd add a cloak into that, short of mucking about with restarts, which is a bit beyond my experience.
It's certainly possible. It's just that I haven't got the faintest idea of how to do it.
