The spring is 37" c to c, truck on the ground and no load in the bed. The shackle itself is is 2-7/8" c to c. Is that what you needed? If not hit me up and I can check.
Yes! Thanks! I need to make new shackles in the stock size to get rid of the lift shackles that are on it now. Don't feel like ruining another set of axles.