Well...I think I must apologyze, but I'm afraid my source is wrong.
I had some doubts...but I hoped that a Pro' would have solved them giving the answer I was waiting for.
Now, this answer has not come yet, and so I made some research more getting the convinction that my source is wrong.
The truck is not an FN, and not from Belgium.
I have to lock it again for 58_spider, because my first answer was wrong...the truck is french and from one of the marque he mentioned. Sorry!