Peterbilt 379 Improvement MOD. INC update to engine & jake sound mod

This mod includes.

* Interior camera fix, seating position corrected.
* Clean paint job, no flags, custom paintable to any colour.
* Transmissions added, 18 speed, real Eaton fuller ratios (with or without retarder) and H shifter config files. (read the readme, works like a real road ranger)
* Engine added, 620HP 3000NM torque
* New engine and Jake brake sounds *UPDATED TO V2.1 FROM PREVIOUS SOUND MOD V2.0 RELEASE* (engine is louder inside, turbo sound adjusted and horn replaced)

* Optional Interior Skin (if you wish to use it just install the interior skin file as well)

You will need to have Onixers peterbilt 379 v1.2 installed for this to work.

Credits:

-Aiightis