And here's the trial fit of the bed this morning....
I got everything tacked in place, then pulled the bed back off to finish weld in all my mounting points. Once I had all my mounts weled up, I trimmed back the extra 3/16" flat stock that was no longer needed. Sunday morning, or maybe Wednesday, I will build up the 7" needed to make up the rear of the frame. The back of the Dodge frame is 5" channel, so I will cut and weld some 3/16" flat stock to extend back and support the rear of the bed.
-Joe