Changelog v2.3637.2
List of current things fixed:
- Rear bumper texture fixed
- Chrome textures improved
- Higher Res wood texture for interior
- Lamps and glass on headlights
- New 352 headlights model

Additions:
- New Detroit and Cummins compatible engines from steam workshop
- Single exhaust
- Under chassis cables
- New chrome hydralic cables
- Traditional bumpers added
- New custom cab
- Removed old painted fenders, added new chrome ones
- Light bars for cabs
- grill mesh
- peterbilt logos
- More to come...

all users know one thing: THIS MOD WAS ORIGINALLY CREATED BY FRANK_PERU
It wasn't updated since 1.4 (wow this was abandoned mod) but has been brought back to life

Standalone
2 cabins
8 chassis
11 gearbox
Own interior
Cable support
Registered in agency orders
Tuning

There are 3 files in the archive
352-362 Project_136_137.scs Truck
352-362 Scs SCI Steering Addon.scs DLC support SCI Steering wheel
352-362 Sound pack 1.36 LOCAL sounds.scs Sound pack for 1.36 (7 sound options / engine brands)
352-362 Sound pack 1.37 Kriechbaum 3.1 sounds.scs patch to support sounds from Engine sound mega pack for 1.37
352-362 Sound pack 1.37 SCS sounds.scs patch to support standard sounds from Peterbilt 389 for 1.37
For 1.37, select only one patch, either standard sounds or sounds from the Engine sound mega pack

Link 3 Engine sound mega pack

Credits:
FRANK_PERU, LUCASI, Update Geoff G.