I'll say that when icon leafs go in the lift is basically double advertised until it settles. Option 3 gave me about 4 inches of lift when they advertise 2.25. Not unreasonable that you'd get 1.5 to 2 inches on option 1 before it settles.Forgot to mention I havent had a chance to measure on a flat surface the 45 was while parked with the brake on, driveway is sloped and too wide to fit in the garage. So it was 43 and a little parked in the same spot before. Pretty sure with option 1 it should only be a 3/4in increase over stock height. I'll remeasure on a flat now that I got about 300 miles on it and a good chunk of that on unmaintained roads to test it.
I do still have stock shackles, been looking at upgrading those.
For measurements like that yeah you're right flat land is better but as long as you're doing all your measurements in the same spot it can act a bit like a control.