raise front of 03 chevy

I have a 2003 chevy with a three inch body lift and i want to level the front up or at least closer could i just adjust the torsion bars

there is a leveling kit you can get, my neighbor did it and it only cost him about 300.00 any off road shop will have it

I was trying to make it easier how hard was it and what all did he have to do I have seen the keys to raise them but thought they might be hard to change

If you want easy get spacers to put in the springs like they use on the track.  Most auto parts stores can get them for you and they are cheap.