So I did the full leaf spring rear lift
Also, coil front...

The rear looked a touch off so I ordered 1/2" - 1" shackle leveling kit.
...basically a set of shacles that were slightly longer with the bolt hole for the 1/2" and 1"...

They just showed and the hole that should be for the 1/2" are just under 2"s longer shackles than the stock bolt...
...and the 1" hole is like another inch beyond that.

Does anyone know the increase in shackle length to lift?
I only want to raise the back like a 1/2" to better match the front.