I have a 1999 K1500 Suburban that's pretty much stock at this moment. I just purchased some 2007 Silverado factory rims that are 17', where as my originals were 16". I want to add some lift but not a ton, and I have heard/read that this can be easily accomplished with blocks in the leaf springs in the rear in conjunction with ratcheting up my torsion bars on the front. My question is how much lift can I achieve on the front safely, without damaging any suspension or drive train components. As little as 1.5-2.0" would be enough for the look I want, am I ok doing this, or should I get a leveling kit with the torsion keys? Thank you in advance for any input.