2/4 or 3/4 drop

[blackchevy06]

im looking to drop my brand new 06 silverado 1500, single cab. i wanna make it level in the front and back. on the mid-90's models a 2" rear drop would level, but im not real sure about these new models. and i wanna know what all parts are necessary: shackels, hangers, drop spindle's, drop coils, drop shocks, etc. in near future will be rollin 22". any advice will be helpful. thanks