1968 Lift Kit

[68C20]

Well evidently I have been the victim of wrong parts once again. My rear leaf springs are 52 inches but the center pin is offset. I am trying to achieve a 6 inch lift and run 37x13.50 Toyo Mud Terrain tires. I am willing to replace the entire suspension if need be. I would like to know what have you done to get the lift you want and whose kit did you use or did you have to make something work? I am going to be running the factory K10 running gear.