rear solid axle scrub radius?

[67goatman455]

I'm not even sure if this even a......THING? I couldn't find an answer to this in any of Ron's threads (unless i missed it)

i think the title asks the question enough already but is there a good formula to figure out what is needed for the rear coil-over shock angle? I read on here a while back its basically the same as the front, you want to get the scrub radius in the rear as close to "0" as you can?

This picture shows the ridetech coilover kit installed on my car. I instantly started wondering why there is even a lower relocation bracket, as i have room to mount it in its original location, which is located about an 1-2" inside the wheel or so.