[BossHogg69]

whoa, easy there! usually a taking a coil off the front springs will net about a 2" drop. don't use a cutting torch to do this (I'm sure you probably already know this) - cut off wheel, sawzall, etc is the way to go. You will still have to get the truck aligned, regardless of what you do.

As for the 4" rear drop, no need to cut off the axle pads and move them! Just get a 2 or 4 degree pinion shim (wedge) to adjust your pinion angle, but you'll have to measure the pinion angle when you lower the truck to know exactly what shim to get. The shims usually run around $20 bucks. If the pinion angle isn't right, you might get some undue vibrations and possible accelerate wear on your carrier bearing (if you have one).