Rock Krawler Long Arm Kit?

Has anybody run this set up? Good? Bad? Have a bone stock 2000. Want to do it right the first time! want to run33X12.5s, and be able to acomplish the Rubicon. I've heard bad things about "Revolver" shackles, How about these "Revolutionary" Shackles that come with this kit?

Thanks in advance for your input!!

Try a search, I remeber some good discusion about a coupple months ago.