System View Model Size for Ships

Anyone know the setting and which file (vehiclesize or Xfileclass data file) is used to set the size of the ship in the system view?

I've seen base model radius (Xfileclass file) and Maximum Model Size (vehicle size file) but haven't toyed with it yet.

I've noticed that the dreadnought in system is smaller than the cruiser, just wanted to fix that without too much work