Has anyone successfully used the USCartool A500 Crossmember?

I'm not an engineer and I can appreciate the tests you've done. But here's the thing, I can recall at least three members here that daily drive their cars with the A500/518 and modded the tunnel the same way as above and I believe have had no negative effects.

@TrailBeast @Junior340 @gdonovan either of you want to weigh in?