Hi, I have lots of Armada ships and play with friends. Because all of my upgrade cards are in "type" order it means rebel ships are using upgrades that came with imperial purchases and vice versa. Clearly rebels cant have Vader as fleet commander but unlike other games (imperial assault) no cards are marked imperial/rebel only so is this o.k - im thinking of using gr75s repair crew with my gozantis next week ;-)

It doesn't matter which faction's ship the upgrade cards came with. The only exceptions are the cards with a faction symbol on them. A lot of people (myself included) buy ships from the other faction just to have the upgrades and of course to satisfy our addiction to prack.

Hi, I have lots of Armada ships and play with friends. Because all of my upgrade cards are in "type" order it means rebel ships are using upgrades that came with imperial purchases and vice versa. Clearly rebels cant have Vader as fleet commander but unlike other games (imperial assault) no cards are marked imperial/rebel only so is this o.k - im thinking of using gr75s repair crew with my gozantis next week ;-)

Yes, Some are marked as Rebel / Imperial Only, by their faction symbol - this is generally (for upgrade cards) Unique Fleet Commanders and Officers. However, if they lack the symbol, they are generic.

Yes, Slicer Tools can be used by Rebel GR75s, despite coming in the Gozanti pack.

Yes, Repair Crews can be used by Imperial Gozantis, despite coming in the GR75 pack.

Just double check symbols.

Rebel Only:

Totally Generic, despite having an Imperial Officer on it:

Recently my rebels have begun hiring skilled imperial first officers...complete with Navy uniform and a very stern mien.