Here's mine in action.
Ken's is simplier in that it bolts directly to the housing. Mine has the lower bar going to brackets on the housing and the top is tied into my bolt on anti-roll. You can easily bolt to the top or the frame rails if you don't wan't to mess with an anitroll. The advantage with mine is it doesn't pivot with the axle, it stays stationary when the car launches. This keeps the rear tires from unloading. If you watch the wheel in my video it barely moves when I drop the clutch. I have been wanting to build a bunch of them but I just haven't had the time so if any wants to learn more shoot me an email and I'd be happy to fill you in.
Would you believe I had to use a 560lb-in spring to make it work the was I liked it