New Volvo FH 1.7 Re-worked

This truck mod is a nice little package of some much needed changes
and fixes that the stock SCS Volvo FH needed, such as new fuel tanks,
new emissions unit, and a few other things, such as a tag axle chassis
variation! Much more in the readme.

Credits:

Sib3rius, SCS, Dadus, Volk_86