Measuring ride height

I just measure from the garage floor, to the bottom of the fender. Then match the other side.
Find the height to your taste, and your good.

PS: Before adjusting the torsion bars, loosen the 2 lower control arm nuts a couple turns.
This will stop you from tearing the bushings in the control arms. Tighten them back up after you adjust the height, and the car is on the ground.