Azusakawa*'s post in Save editing ownable trailer was marked as the answer
You can use save editing to get a company trailer skin.Because this skin is default.
You need to
get company work quick save your file to get trailer code use save editing to own trailer If you don't know how to save editing,you can watching this topic.
Azusakawa*'s post in Is there a way to get a 10x4 chassis in multiplayer? was marked as the answer
Sorry you can't use 10X4 chassis in MP, maybe you can try new truck MAN 8X4 chassis.
If you not like man, you can try Forerunner mod change truck chassis.
Remember follow MP rules.