odd ball question, sure to anger some. Can you lower a 4wd Tahoe?

[nikwho]

Aside from people not liking the idea or asking why, has anyone heard of lowering a 4wd Tahoe? My wife and I are looking to buy an '02 to '06 tahoe. Preferrably 4wd because we live in the snow. Could be 2wd because we will have an extra 4wd suburban(her current DD that we're not going to sell). Her and I both like the look of a slightly lowered tahoe with 20's. I'm curious if I could get the ride height of a 4wd to sit even just slightly lower than a stock 2wd Tahoe. Im confident that the rear will not be an issue. I'm worried more about the front. These years are all torsion bar vehicles, right? or am I wrong? Can they be adjusted down and still maintain good wheel alignment?