Has anyone successfully used the USCartool A500 Crossmember?

I'm kind of skeptical if that 1/4" bar is really enough, it would be better if it was a box structure like the original for sure. In bending "cross-car" (think passenger side to right side as arrows show) with stress from the suspension rising and falling, I doubt it has much strength. The floors have very little strength outside of the crossmember.
upload_2019-12-18_16-30-53.png