Birth of the Blue Missile

Take the shock out
Remove the bump stops
with a wheel/tire on the front...set the car at your desired ride height using a jack(s) to hold up the front. when I did mine I used a junkyard sizzor jack on each side to get it even
measure the shock distance.....eye to eye....I sent you two upper shock tower/ supports (one is 1" shorter than the other) additionally each one is adjustable - shorter up to 1/2" Try to get the eye to eye...at ride height....11.75" to 12". Naturally, since the lower is set (non adjustable), the adjustment needs to be made with the different upper shock mounts. Fine tuning comes with the shock ...later

When in mock up...I only install the shock to check clearance issues.

I run an adjustable strut (11.75- 12") in the meantime to keep the ride height constant...since all the weight is not on the car.

The spring size (lb) and adjustment will be made once all of the weight is on it,
until then, if you use the coilover, you spend a lot of time unneccassarily adjusting without the actual finished weight of the front