Box in frame

[884x4310ci]

Hey guys did anybody box in there frame ? Just wondering if you have pics to see. I am taking the truck off the frame. And it maybe a good time to do so.
Thanks

 

[Wade]

https://www.gmt400.com/threads/boxing-doubling-the-rear-frame-on-my-sasd-1997-k1500.24994/
https://www.gmt400.com/threads/anyone-boxed-their-frame.31594/

Here are a few threads about it