[member="Athrun Zala"]
Well the Factory is more for the creation of ships that don't already exist in the SW universe, or are heavily modified from their original state.
If you want a ship that already exists, say a TIE Fighter (just an example) then as long as you work it into your biography or thread how you came about it and why, then it will be fine.
One of my characters, Krius Syonis, has a scavenger ship. I didn't create it, I just worked it into his bio that he stole it from two explorers whilst he was on Korriban, after he killed them.
Does that help you?