The last two pics are kinda back-asswards. I welded the existing metal together to simulate the effect of the rivets in the steel I cut out before welding in the new "brace". They prevent the radiator mounts from moving.
That looks great but just fyi, look up the term stress riser, or stress focal point in a material science book. I don't grind many non cosmetic welds anymore. The bead is extra material that is contributing to strength, and the scratches left by the grinding create more spots for cracks to start. But it is a hell of a lot stronger than rust, probably the worst cause of stress risers.