I have seen our trucks with later flareside beds and IMO it just doesn't look right.

Has anyone seen one of our trucks with a F1 bed or F1 fenders on our bed?

 

It is called the 63 wrong bed.

 

Wrong bed refers to 1961/66's that came with 1957/60 F100/350 STYLESIDE beds. It's called the wrong bed because the cab lines do not match the bed lines.

1953/77 F100/350 FLARESIDE beds are essentially the same., but 1948/52 F1/F3 Flareside beds are not the same as 1953/77.