Cummins M11 engine sound mod v3.1

Version 3.1:
-added turbo noise on jake
-added support for convoy sounds so other people can hear your truck

-Cummins M11 Custom & Lope 500HP (AKA Do It For Dale)
500HP
2420FT

-Cummins M11 Custom & Lope 1000HP (AKA SEND-IT!!)
1000HP
3420FT
-Cummins M11 Custom & Lope 1420HP (AKA I RUN ON FREEDOM!!)

1420HP
4200FT