I currently have a 2004 quad cab with a 2.5 Fabtech suspension lift and a 1" Daystar body lift. i am looking at upgrading to a 6" suspension lift. In doing so, I believe that I will need to change out my auto-locking hubs to manual type. Two questions: 1. Is that correct or will i be able to maintain my auto-locking hubs? 2. If I do have to change them out, what manufacturer should I look at? Thanks in advance for any information!