Rough Country 4" lift install????

[Virginia72SWB4X4]

I'm installing this 4" lift with rear springs on my 72 K10. The concern I have is the rear springs they provided. The springs have the normal round eyelet where the bushings go and at one end the second leaf goes under the eyelet "cupping" the bottom of the eyelet.

I'm not sure which end this should go on, towards the front or back at the shackle. I've tried installing it on the shackle end. The shackle wont fit it.
It also appears to interfere with the spring bracket on the frame when it pointed towards the front.

Does anyone have pics to share or perhaps I've got the wrong springs?

Thanks Gary