An IFS system will have two torsion bars going from under the door area, to the front suspension arm. To level, park on level ground, mesure the height from ground to bottom of wheel well in back, do the same in front. Lift the front tire off the ground for a total of the difference in measurments, and crank your torsion keys till the tire sits on the ground.
Here's a gould how-to on the matter:
How to crank the torsion bars on a ford Ranger for more lift