Lower rear clam shell sill plate.

[northern 85]

Hello, we are converting a 65 panel truck with barn doors to clam shell, is there any chance you know of one that has been parted or rusted out? Pretty sure we have everything except the lower rear sill plate,where the lower hinges go through and bolt from the bottom up. Dont need the whole thing , just the areas that the brackets go through with the mounting plates. This picture(not ours) shows the two areas under the doors im talking about