To be technical, a SOA will lift any MJ, 2WD or 4WD, about 5-1/2 inches. If a 2WD starts out 1" lower than a neighboring 4WD, after both undergo a SOA they will both be lifted by 5-1/2" (+/-) and the 2WD will still be 1" lower than the 4WD.
The amount of lift from a SOA is the sum of
1x perch offset ~ 1/2"
1x axle tube diameter ~ 2-3/4"
1x perch offset ~ 1/2"
1x leaf pack thickness ~ 1-1/4"
Add that up and you get 5 inches as a minimum lift.
Pretty much . I got 5.5" going SOA.