2" lift on top of 4" lift - What do i need?

[mxc]

i currently have a 4" lift with radius arm drops, a longer replacement track bar, sway bar drops, 5" rear block, etc. i want to make it a 6" kit so i can clear my new wheels/tires but don't see the point in buying a whole new lift. what will i need to safely add the 2 inches?

this is what i plan on buying already, 2" coil spacers, longer shocks, 2" rear add a leafs and longer u bolts.

will i need a 2" track bar drop bracket since it already has a longer track bar? will i need a new pitman arm?(it's still stock) what about brake line extensions?

i was planning on ordering everything from top gun except i didn't see brake line extensions on there...