This might be a stupid question.. but I have a 2" AS Leveling kit and my truck sit perfectly level. I am looking to maybe adding a little extra height without the cost of a lift.

I am thinking about doing an add-a-leaf but curious if there is anything I can do to raise up the front another inch - inch and a half?

 

2"-2.5" is about as much as you want/can go with a simple leveling kit. Any more and you'd need to get a lift. Hope this answers your question