I wish I could help you out, but the previous owner put it on. I like it though. The truck sits great and looks sharp. I can tell you that make sure if you do it yourself, get the truck aligned right after, your gonna throw off the front end by adding the new center hinge brackets. I can also tell you what kit it is...
Skyjacker F840TKH
I wish i could be more help than that. Let me know if you have any other questions.