Well, there is roadwork in my neighborhood.
Idiots dug up the road, and did not bother to build a ramp to make a smooth transition, and clearly lack the brains to mark what they have done.
I was following a truck at slow speed, and suddenly my car became a seesaw... Kinda. All four wheels were making contact with the planet, but barely..
Needles to say, there was some serious damage to the underbody. The chassis rails were badly crushed.
I decided just pulling the rails would not suffice, so I went about building a DIY butterfly brace.
I know FM uses 2.0 mm steel for their setup. I went for 2.5mm steel, and doubled up the steel on either end on both sides for about 8 inches, so I would get some really strong jacking points...
Here's the chassis rail once it has been straightened and undercoating applied: