just hope you never get a guy who knows his stuff and is a strictly by the law kind of guy. Not sure about there but here those false papers break several laws and you have no argument since the papers don't go with either the frame or engine. I have a couple bikes with the engine and frame numbers don't match and have the title to the frame because the engine was swapped out. Still have the engines that belong in those bikes too though.

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!