Okay here’s my best attempt at blending a 59 Olds hood with a 62-66 Chevy truck hood. I realize it’s crooked, the wrong color, and the wrong grille but it’s what I had to work with. My original thought was to move the outer edges of the flat truck center section outboard, but now I’m thinking it would look best to completely eliminate the flat center section with the twin peaks, and simply replace the whole thing with the corresponding drop center section from a 59 Oldsmobile hood. Depending on the size of the real parts, a Corvair might also make a suitable donor:
It would take a lot of fabrication, but would certainly be unique and I believe better looking that the 62-66 version.