ATS - Sound Fix for Peterbilt 281-351 mTG V1.2 (1.39.x)

Sound fix for Peterbilt 281-351 mTG (ATS).
Adapts the "ATS Sound Pack v3.3" (Krichbaum) for Peterbilt 281-351 mTG.
Requires "ATS Sound Pack v3.3" (Krichbaum).

Authors: YuriI