Sure, there are a couple variables for this very thing in the sovereign's .XML file.
<ModelScale>1.0000</ModelScale>
<EquipmentScale>1.0000</EquipmentScale>
<ClothMapScale>1.2000</ClothMapScale>
However, I've been having trouble getting the equipment to properly scale with the unit. Still seems to work alright for me though. Lemme know if you get it working.