ok i got a 2000 f150 4x4 and i dont have torsion keys but i crank up the bars my self to level it out . i was wonder if i bought keys and left it crank up i can just get blocks in the back to get a whole little lift

 

keys wont give you much more lift. and i wouldnt get em anyways, they put too much of an angle on the front control arms. just keep em cranked and get a 3" block or a 2" add a leaf and itll be about 2 inches all around. enough to fit 35s

 

but man by puting a leaf or block will just throw my back end up and its all ready level out front and back so what u think

 

if its level right now you can tighten you torsion bars a little more. mine are maxed and its 2-3 inches higher in the front.