Alliance are a serie of different mods. On the Star Wars GC, you can play the civil war Empire vs Rebel era + Black Sun and soon the Republic and CIS.
The Wheel. It can be seen in the Legacy era comics and by this reason, I have added a complete planet where you can find it. There will be even a ground map from it.
About the model. I have made it by myself and Nawrocki has made the textures.