35's with a 4" lift

[Travis K]

I am installing a 4" Rough Country lift on my 68 frame. I am having a few issues with fitting it. I couldn't find a lift for a 68, so I purchased a lift for a 69-72 with 56" springs. The first issue I ran into is that the spring eyes on the leaves are quite a bit narrower than the shackles. That is not too difficult of a problem to fix. The main issue I am having is that the 56" springs are still too short. On the rear end, the shackles contact the bracket before it is even off of the ground. When it is set back down, the shackles sit at about a 45* angle pointing towards the front of the truck. I do not have any reference photos, but I would think that the shackles should be near vertical when they are at rest? I would get some photos of the issues I have had, but I am currently deployed. If anyone has any ideas on how to fix this, let me know. I was thinking of relocating the rear shackle hanger forward a couple inches. Does anyone see any issues with doing this as long as the centerline of the axle stays the same?