3" lift questions

Got my mind set on the 3" Lift w/light front coils & rear. first question is what shocks or anything else do i need to buy once i buy this kit from toytec? and also whats the difference between getting the light, medium, or heavy coils and whats the advantages?

And lastly, in the description the leafs are only 2 inches. this might sound stupid maybe theres a trick in adding the leafs or something but why is it called 3 inch lift if the springs are only 2?

 

well i just answered my last question...Q. Will your lift kit "level" my truck?
Yes, the 3" complete kits will level your truck, lifting the front 3" and the rear 2". The 2 1/2" kits will leave the rear slightly higher, like stock.

still awaiting answers on other questions