Talk:Integrated Astromech/@comment-210.49.67.182-20151129053726/@comment-24155381-20151208063805

Official Rulebook, page 20:

"Ship-type only: This upgrade can only be equipped to a ship of the specified type. If the ship’s type includes the entirety of the restricted type, it can equip that upgrade. For example, a TIE/fo fighter can equip an Upgrade card restricted to “TIE Fighter only.”"

So, Because the name "T-70 X-Wing" has the entirety of "X-Wing" in its name, it is allowed to use this card.