What If Build Ideas...for Land Speed Racing

Safety first. Without triangulation it can flexat speed. Big bang theory follows.
In a similar vein, consider like the Shelby Monaco? brace that bolts in to keep side to side movement under control.
I believe it is a very stout cage and frame. Frame is 2x4x3/16 with double frame in drivers compartment. If this thing flexes, I am in deep **** anyway. I will look into triangulation. The plan is for bolt in cross bracing (side to side) but that doesn't fulfill the triangulation.