Show me a picture of the back of your 55 to 59. Tail gate view, more or less together.
I need ideas for the back
EDIT I found the picture.
I don't like my triangle piece.
The hole in the end of the bed side, my after market bed sides, the hole is different than the originals.
I bought lights to fit the hole of a ford bed side and a short piece of DOM tubing and made it fit.