Hi Blai,
Sang is a simple, 2D, so called "face me" component. If you delete it from your model (and also "Purge" it) and replace it with anything (let it be another face me component or a 3D one - even a car or a bush), you can save this file as a template under the File menu.
Then go to Window > Preferences > Templates, you can choose your newly created template to load any time you start SU.