No, not all of these people worked on the trailer, but I took the containers and some other stuff from other mods, like everybody does. I´m pretty sure that you won´t find a list of credits like this, because nobody cares. But I do! So I mentioned everybody who was directly or indirectly involved.
If you would read the description carefully, you would see, who was mentioned and for what. Why should I build parts, when they´re already available?

And last but not least, my work got converted without even asking me, and you are complaining?? How sweeeeeet ……