1" leveling kit on 6" suspension lift?
 

Newbie here asking 1 question. First of all i have a 2015 f150 fx4 on 6" lift (Rough Country). My back is sitting a tad bit higher than the front. I was wondering if i could add a 1" leveling kit to the front. Also will this make the truck level, or will the front rise higher than the back? I just want my truck to be level. Thanks in advanced.