I just got my first truck. An 86 Blazer. It's all stock. I just got some 33's for it. I was goin to buy a 3in body lift for it but my dad said that there junk. I've been lookin at some suspension lifts but there like 500 bucks. I see that everyone on here has a done a shackle flip. What exactly is a shackle flip? Can I just buy the parts for a shackle flip and raise the truck 4in or is there other parts that i need to buy? Thanks.