Looks real good to me! A buddy just did that with his 51. He used 3 pieces all about the same width. He had a one inch gap between them so just picked up some flat steel strips, painted them and screwed them down.
My old wood is starting to crack and crown and some of my bed strips were rusty (painted over it) and I am slowly thinking about going that route as well.


1949 Chevy 1/2-Ton
"Sedgewick"
In the Gallery
1989 Caprice