Hey guys , previous owner of my 99 5.9 QC 4x4 put in a leveling kit on the front, i guess over the years the rear has sagged a bit and its a tiny bit unlevel. whats the best way to bring the rear up a bit , im thinkin blocks but not sure the best route , input gents

 

Add a leaf is better than stacking blocks. Most all lift companies make AAL's .