Upgrade suspension

I'm not a real suspension guro. Where can I find aftermarket control arms, ect, ect?

ever hear of google try that.

Tried that, didn't find what I was looking for. I saw a picture of the parts I'm looking for, but it didn't say what it was and what brand it was. What's the bar that goes from the bottom of the strut to the control arm? What are the top aftermarket replacements?