Accessing Modded Blocks?

The server I currently play on uses modded thruster blocks in addition to the regular blocks. I want to set manual overide for a few modded thrusters on my ship.

Would I be right in guessing that modded thrusters would inherit the same properties from IMyThruster? Ie could I use IMyThruster to access these modded thruster blocks and then set the overide the same way I would for a normal unmodded thruster?

This brings me to one more question. Do all modded blocks inherit from a base class...

Accessing Modded Blocks?