Mass Driver (2 Red dice at Support range.)
Turret (2 Red dice at Assault range.)
Sensor Pod (1 Yellow die.)
E.C.M. Pod (1 Blue die) [Suggested by Ced23Ric.] On the right you can see it broken down.
Obviously, you do not have to use these stats and can label these creations however you want in your own games.
These are the pieces I used for the stand.
As you can see it doesn't require much in the way of parts to make a modular plug-in. If you count the friction pins the Mass Driver and the Bridge both have eight pieces. I know some people are already experimenting with this idea, so let's see what you can do!