I've had zero issues with stock waggy stuff too. those pieces are solid, not hollow - I'll bet they have just as much strength as the DOM.

I too would be worried about changing that draglink angle. You want that as close to parallel to the track bar as possible to avoid bumpsteer. Also, not sure what your clearances will be like when you stuff the left front wheel....will the tierod come into contact with the draglink mounted on the bottom of the pitman arm?