I am swapping 63" chevys in the rear of my 87 runner and want to be sure I have everything covered before I start tearing it apart. Please post the lengths of your dual shackles. I obviously have the stock toyota shackle but on my chevys I need to have a set made. I think they need to be 6" eye to eye. I called Sky and they said their shackles are 6" E to E and that should work but I want to ask others who have already done it to be sure. Also do I need to worry about the shackles inverting when they droop or is there something I can do to prevent this? Thanks, Andrew