I installed the HBS 2.5" kit and have had no problems with it thus far, it still has about an inch of rake with the kit installed. After install I would definately recommend getting an alignment done for your tires sake!
I have a few pictures posted about halfway through the thread below, of before and after the HBS install.
http://www.ramforumz.com/showthread.php?t=64150&page=4
Enjoy!
http://www.ramforumz.com/showthread.php?t=64150&page=4
Enjoy!