All right. Now I know what a shackle flip is from all reading I have done on this site but I am not sure what all the advantages are. I would like to do one. Ok, so does it raise the whole vehicle 4" or just the back? I am pretty ignorant when it comes to matters of suspension. I think the last 4x4 I had was beack in high school and that was a '47 willys CJ2A. I didn't even finish rewiring the thing before I ran out of money. Any detailed explanationn about the advanatages and any disadvantages of the shackle flip would be greatly appreiciated. Thanks in advance. Oh Corey, I read your column on the website. That's when I first started getting interested.