lets say i get a 2 inch coild spacer, 2 inch add a leaf in the back.... at this point i dont need longer controll arms or traction bar brackets, but now lets say i put a 3" body lift on top of that, do i need anything else now?

 

no everything you will need should come w/ the body lift if you get a good one

 

You won't need anything for a 2" I think. As for the body lift, like he said. A good one will come with everything. Mine came with steering extension, hoses for the gas tank, and block to put between the bed and the frame so it doesn't "bow" with alot of weight in it.
Also with ALL the hardware I needed, loke bolts and front bumper bracket.

 

I have a 3in. coil spring lift which actually measured 2in., you may need a trac bar bracket, I did, purchased it from Rancho.

You can use the stock control arms, you will have to adjust the eccentric bolts on the lower conrol arm to lenghten them.