If I do need to reinforce the storage compartment, here are the supplies I can work with:
(15) 53" long 1.5" x 2.5" steel beams
And the threaded rod shown below
I can buy bolts and small stuff, but I don't have any budget for a total overhaul or anything fancy.
Also, I no longer have access to my welding setup
So if possible, I would like to stick to bolts and rivets.