I have searched the forum all over and I cant find my exact answer. Right now I have 4 inch blocks in the rear and I am wanting to take them out and put the stock blocks back in with a short add a leaf. That should be the same amount of lift as the 4 inch blocks right? Also how do I install the add a leaf?

 

when you get the add a leafs it will come with instructions but basically:
you jack up the truck and support it by the frame, take the wheels off and let the axle hang. undo the bottom bolts for the shocks. undo the u-bolts and support the axle. hold the leafs together with some c-clamps and undo the center bolt. you put the add a leaf in between the the last leaf and the helper spring and reassemble with the longer center bolt provided in the kit.

if i missed anything guys please correct me.

 

it should put you up about the right height. but AAL are nomally around 1.5" of lift if you need more just get shackels

 

You should save up and buy some Deavers!!!! AAL's are good too and you can install them the way Andrew said!