ETS2 - Max2712 improvements and Rework NG Scania V8 Stock Sound V1.0 (1.37.x)

New engine start, idle and stop sounds interior
All sticks and switches recorded and added into the game
Real blinker sound
Real gearbox sounds
Real warning sounds in the interior
and something more.

Authors: - Kriechbaum, for the base mod
- Max2712, for all changes and additions
- SCS