Am building a Tamiya BT-7 and will also start an Eastern Express BT-7A. Have Eduard PE sets for both. The PE set for the Tamiya comes with a bit of an interior. Plan on expanding on it a bit more. Hopefully something like this:

but have one question when it comes to the turret.

Those two boxes at the rear are what exactly? Radios? Don't feel like leaving them as is.
Any help on this? Thanks.