P.S to measure front droop! Must take off front bumper and check at very center front of chassis. May differ if your chassis is bent.

What does “droop is 3mm difference in ride height” mean?
I don’t put the car on droop gauges. So for example the rear ride height is 5mm so when I lift the car to feel droop, max droop is 8mm ride height. So droop is 3mm.