Are you saying I should get rid of the one in the picture? I got that picture off of Google. The cracks on mine are on the ends around where the lower control arms are held in.
I would weld it, or have someone weld it, but my welding instructor (who is an ex-body/mechanical repair tech) was very clear on not welding it if I don't absolutely have to. I was a little skittish about going to town on it with a welder to begin with, knowing how much of a vital part it is. You wouldn't happen to know if it was ever heat treated, would you?
Keep in mind, whatever goes back in there will eventually need to handle around 400 hp...