The stake posts are made to rest on the lip of the bed as well as in the lip of the tube steel pockets so they could be self supporting of the bed without the rails resting on the bed- here the prototype in pine- used to reference when I made the IPE posts

http://i1078.photobucket.com/albums...0-4405-BD37-2D6CA1F63ABB_zps8j6fb9rl.jpg



1954 Chevy 3/4-Ton Chevy
"Mo"
1948-53-54 "Mixed Bag" Chevy Stakebed
"Basket Case"
1952 Chevy 3/4-Ton
"as yet un-named"
In the Stovebolt Gallery
Lots of pictures