I recently bought a 56 3100 to restore. I removed the entire bed of the truck and discovered the rear msot crossmember of the frame was badly bent. Honestly, I have no clue how it could've happened. It almost looks pinched. The bed was all original and in fine shape.
Anyhow, does anybody know where I could source a new crossmember? It appears it's as simple as drilling out the rivets and bolting on a new one.