The console packages you get on the exchange/lockboxes are crossfactional. So the only way for fed aligned characters to get the kdf ship consoles -like the leech- are those boxes. Likewise the only way for a kdf aligned character can get a fed ship console -like your ionized gas console- is a console box. A box can be used by either faction, but the outcome depends on the faction of the character that opened it.
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Good News: Once you've bought the ship it's unlocked for all your kdf aligned characters.
http://sto.gamepedia.com/Vandal_Destroyer
When buying the console pack on the exchange it tells you what it will be depending on the faction.
but romulans can't use kdf ships, will i still be able to get the console ?
Romulans can't use T5 kdf ships. The Vandal (TY decronia) isn't T5.
Thanks for your help, much appreciated
My character Tsin'xing