Got the decals, added license plates, moved the ladder and modified the end to look more america.

Very good job, I think it looks convincing. Here's a shot of the rear of a very similar tank trailer:[attachment=11434]It's a little hard to tell what you've added from your photo, but US trailers have a bar (or in this case an extension of the rear assembly) that goes below floor level to prevent automobiles from underrunning the trailer in case of a rear-end collision. (This would decapitate anyone in the car while taking off the roof.) You can probably get good dimensions from one of your US prototype trailers.

jab Wrote:...would decapitate anyone in the car ...

That is serious and needs immediate action!

Very well done!