Help with Utility trailer

[chaptr2]

I have some question about out body style utility trailers and location of VIN.

I picked up a utility trailer already done (for free), but with an eight-foot bed. So I took the long bed off and put my old short step side bed on. We also had to cut a little off the rear of the frame (maybe 6 inches). The space that was left up front I used an aluminum diamond plate truck box. For inside of the bed I used steel diamond plate for the bed floor.

Now after talking to Washington State Patrol office to get it licensed. He said that I should hope that I didn't cut off the VIN number that is stamped in the rear of the frame. I don't know where that is at and I didn't cut the frame the guy who gave it to me did. The guy never registered this as a trailer, but gave me a title and VIN tag to the truck that it was from.

Does anyone have advice for me? I know there are some people from Washington State here and I wondered if people have gone through this? Thanks in advance...

Chaptr2