You can find the fire truck skin here, it will be updated to PBR once the new MAN update gets released.
@MRcrash @Alex_The_Gamer [oh, and apparently also @broohh] : The upcoming fire truck is the variant I'm the most excited about. Could you please include individually skinnable roll up doors to the UV? You surely know that most fire engine wrappings don't just stop at the end of the cabin.You've probably even included it already, but I think another suggestion - just in case - won't hurt. Thanks for the great work so far!
Don't forget the fact that MAN is a copyrighted brand and copyright isn't allowed on the repo, so even if the model was scratch-made, it still couldn't be uploaded on the repo.