I would add them under the container. You probably can't use an I beam any more, but that might not have been what you needed in the first place. What…

Hmmm, I'm not sure I can get behind taking out the entire existing support system of the floor for a new supports. At that point, why not just rebuild the…

So do you want the house on the truck or on the ground? I guess I'm confused why you would be adding that to the floor when the under side…

I sell and modify containers. Maybe I can help. Can you explain more about what you have in mind?