while I was at my shop today I snapped a couple of photos of my e12 race car to show the rear cage and shock set up in that car .
this is a clear shot of the upper perch and how the cage ties into it, also you can see the remote rev.
this shot you can see how we raised the tower up a wee bit, , note the two bolts on the top which hold the top clevis mount for the top of the shock
here you can see the entire rear cage and how it ties into the rear shock towers, the diff mount, and into the rear subframe mounts
a poor quality picture of the rear shock, notice its a reverse mount, where the spring is on the bottom and the body of the dampner is at the top, this is an e46 set up , they also do this for e30, and 36 when people convert to true coil over deals