340ci vs 360ci engine

What would I need to bore a 318 over to make it a 340? Im looking into alot of options and this is one im thinking about when I get my mopar. Im still looking at stuff but in the end I think i'll end up with a 318 dodge charger se. Dont get me wrong A bodies a cool BUT im just looking for a Charger for now. Then onto a Duster or Demon cause they also look cool!