I ordered the exact 2" leveling kit from the e-bay site. They stress it takes 21 days from the order date before shipment since it is a cast part. I'm still waiting since I only ordered them 1 week ago. I did adjust the torsion bar bolts 2 turns clockwise and did get 1 1/4" of lift. It still needs an additional 1" to have it leveled off but most posting in the forum are warning not to go beyond 2 turns. I talked to a service person at Lynch Hummer in MO and he turned his bolts over 10 times on his Colorado with no problems after 1 year.
Scared to go that far!