At least I was able to grind the last one which I welded yesterday + drilled mounting holes:

Current holes and bolts are 12mm, but I most probably “upgrade” them to 14mm. I also planned to weld small pieces of L-rod for additional weight carrying to the short sides. Once again maybe I’m over-engineering this, but at least it should be then strong…

Next task is to weld these to the ball joint upper mounts and decide what kind of stiffeners they will still need. Tie-rod  will also need some more clearance so I need to cut small pieces away from the long sides.