My first mod, and a good experience for learning a bit of Blender and Jbeam editing.
A frame that is a meter longer then stock. Front end is from the default Pigeon, in the back you can put either a long bed or long box.
Choice of 2 exhaust: long or louder side exhaust. Side exhaust also available for default Pigeon.
Known issue: the texture on the long bed is just stretched, I don't know how to do UV mapping in Blender yet.
Shaking of the vehicle has been fixed by making a node heavier. (to be honest: it works but I don't know why)
The jbeam for the side exhaust is weird because moving nodes ex4 and ex8 screws up the flexbody.
Feel free to modify, improve, distribute but with regards to what the BeamNG Devs allow because most of it is their work.