It is standalone and can be purchased at any DAF dealership.
It comes with a decent variety of accessories and two frame variants.
There will be much more in future updates!

1.05
– Added GPS interior accessory (bottom left of windshield)
– (Hopefully) Fixed dark shadows issue in interior view
– Reduced/eliminated interior illumination from turn signals
– Fog lights no longer illuminate ground (they were glitchy at some angles)
– Reversed orientation of the ‘toystand’ locator for players using accessories off of other trucks

Test Version: 1.26.4s

Credits:
Smarty