going to lower my dually

[Matt Man]

well i have a change of plans with my truck im just gonna lower it i was planning on doing the 6/8.5 drop but im not pulling inner fenders. i would like to do a 4/7. i know i can do 3 inch drop spindles and cut the coils in the front. but i cant figure out how to get 7 inches of drop in the back, i can do shackles hangars and take 3 leafs out but that will only get me to 6. Do they sell a 5inch flip kit? i was looking and found nothing.

Also how much of the coil will i have to cut?

Here is what my truck looks like now: