Thinking of lowering my 2000 silverado 1500 4wd

[76stepsidechevy]

So long story short everything I've owned in the past 12 years has been lifted so I'm thinking of going the other way. The truck is a 2000 z71 and has 3" blocks in back (in place of factory 2" blocks) and torsion bars cranked all the way up by previous owner. Obviously I can pull the block and be 3" lower out back but what about the front? Can I "decrank" the bars that much? I'm guessing they gained about 2 inches by cranking them all the way up. I'm not looking to go crazy low here as I still intend to use this as a truck. Just looking for some advice here on a good budget friendly and safe setup. I'm planning on running a set of tahoe ltz 20s with some 275/60/20 tires.