[Steve Chryssos]

You guys are on the right track. I'm sure that Any one of the top three clips offer excellent geometry. Any one will deliver obscene levels of performance and make your car incredibly easy to drive at speed. My current experience is limited to stock, 21st, and my own modified ARDF clips. But I have implicit confidence in AME and DSE's suspension geometry.

So instead of pounding on the walls screaming for camber curves, I suggest you sweat the details such as "Do I want the fabricated look or the formed look.

Now lets clear up some misconceptions that I read above:
1) AME's clip is NOT --under any circumstances--flimsy. Art has been building race car chassis for decades and maintains a full time engineering presence. That experience has led them to learn the difference between strong and heavy. As one of the few companies with the ability to mandrel bend rails, their clip deserves serious consideration. It's probably the best combination of price and features on the market.
2) Hydroformed rails or not, DSE's clip does not look anything like a stock clip in person. The coolest thing about this product is the stamped crossmember that allows the rack to sit exactly where it needs to be. This is hard to accomplish with ordinary square tubing.
3) As Jake stated, raised engine position is a non-issue from a performance standpoint and a minor issue with respect to installation. Mr. Hammer, meet Mr. Trans Tunnel. Mr. Trans Tunnel, meet Mr. Hammer.