How to make torque boxes

I'm all for doing things yourself and I'm no structural engineer, but I'll be a critic here and say I don't think the way the plates are installed do any good in reinforcing the area.

The plates/boxes imo should've been installed more upwards, as from the bottom of frame up to where the floorboard and inner rocker panel connect. That way, by proper triangulation, it will really firm up those areas and help handle the forces of the body to the frame better.