Copy these files into the directory where you installed Rebellian there is a directory 
GData, copy in it.
ex:
c:\program files\LucasArts\Star Wars Rebellion\GData

This will enable you to make Death Star, Star Destroyer,Tie Figters, Tie Interceptors, 
Tie Bombers, Tie Defenders build in 4 days.
And make your Star Destroyer almost invincible.
hull will be 25000, shield will be 2000 .

The same things will be awaible for Rebels soon.

ENJOY IT.