Alright so my plans are sorta staring to come together. I have 6" springs for the front of my truck, gonna put a zero rate so ill have 7" lift front.. since the rear seems to sag either way, stock or w/ the 4" lift i have now, would a 4" shackle flip plus the 4" block in the rear be a good idea for 8" of lift or no? Do blocks and shackle flips not mix? Who here runs more lift in the rear than front?