i got this project in pieces. the frame is done and now I'm on the box. I purchased a steel roll pan with a license plate recess. i understand that i need to make a cut out in the rear cross member for the license plate recess .what i don't get is how to attach the pan to the existing rear cross member as it is a lap joint. Stitch weld the entire length,rosebud welds in the face. how do you finish this lap edge? Did I mention that no instructions came with the pan. I also called the company and the help had no clue on the best way.
thank you for any and all the help.

yolo