For those looking to modify .scs files, checking the SCS Software Modding Wiki is the best way to understand how to implement new chassis or cargo definitions for version 1.46. Add-On Pavelli STV Strong [1.57/1.58] - Adver - Gumroad

Features steerable and liftable axles, which are critical for navigating tight European roads with heavy loads.

The (often referred to as the Pavelli STV Strong) is a highly detailed, premium trailer mod for Euro Truck Simulator 2 (ETS2) , specifically updated to be compatible with version 1.46 and later.