Leveling kit with suspension lift?
 

I have a 4" lift on my cummins and im lookin to throw a 3" leveling over it with a couple more blocks in the back. I know i have to get longer shocks but other then that is there anything else ill have to get for it?

Well first off my opinion I wouldn't be stacking blocks in the back.. I'd be doin add a leaf.. you might need longer control arms, if it were me I'd get rid of the 4 and just install a 6inch and be done with it..

ttt