Ome lift

On the full ome lift with the Dakar leaf springs has anyone done this with coach builder plus 3 shackles I've seen on other pages where guys did it and had to put extended length shocks on the rear any input? Im wanting to do kings but funds won't allow at this time with some other mods im doing and ome seems like the one for me just trying to achieve the most lift I will be doing uca as well

 

Dakar springs by themselves give 2.5 inches of lift in the rear without any additional shackles. Why would you want to add 3" shackles on top of that?

 

Was just curious. I've seen people claiming 4 inches on the rear with leafs and shackles and running 37s on some of the trucks

 

CB#3 shackle is only 1.75" not 3"