Thats with your rear axel rotated with the f150 shocks right?
I plan on doing that mod as soon as possible.  Hopefully I'll be able to flex my truck as much as that.
Definately do the axle rotation. It's worth every minute of work. It is AMAZING at the difference in rear wheel travel you can get out of it. Mine is much better and I'm still runnung the Calmini shocks. I had them new in a box when I decided to rotate the axle so I'm going to use them untill I blow one out.
Zig
Sorry no pics on the web of the new flex