In know this not a Frontier, but it'll help give you an idea. I have the Tundra 5100s with the Moog 81092 springs set on the second notch. I got between 3" and 3.5" of lift. My height measurements were identical between front and rear. I don't want my truck to squat, so I set my PRG shackles at the highest setting. In the back, I have OME springs with the PRG shackles. You should be able to run something similar, but keep the shackles set lower if you want squat.
Sent from my XT1575 using Tapatalk

Sent from my XT1575 using Tapatalk