Honestly any ship in an Ackbar-led rebel fleet is a candidate for Slaved Turrets (except the Neb, but then again why are you running Nebs with Ackbar in the first place?).
I can't think of a single Imperial ship I would want them on though...
Nebs + Slaved Turrets + Ackbar = 4 reds to the front arc or 4 reds and a blue to the sides...
Then you explode from all the extra dice wave 2 throws out.