Z95 model and dials

[Brewski]

With the larger Z95 models released, can use the smaller models and other faction dials for play in a republic squad?

[Kris M]

Players may use any Star Wars: X-Wing miniature that represents the same ship type as the pilot in their squad, so long as it is easily recognizable as the ship it represents and has the appropriate ship token fitted in the ship’s base and matching pilot card. 

This applies to official tournaments.  You should consult with your organizer for casual or unofficial events, as this matter is ultimately up to their discretion.