There was only one side of the stock strap I couldn't weld from the bottom.
With the addition of the side support I added that's really not going to make a difference. That and the mount plate cover over half the welded sides themselves.
I didn't just use the thin stock straps and only weld up 3 sides on it. That's what I did as a basis and then the real mounting piece and the side support are high grade plate steel. Those two pieces alone can easily support the bar.
I used all new grade 8 hardware as well.