Simple answer = A LOT
Why so much lift?
The amount of money that your are going to have to spend to get 6" of lift, with im guessing 35" tires, from your current set up is not going to be in any way cheap. Also it's also not going to be very effective considering you have a 2.4L. You would be looking at $6,000+ just in Suspension, SYE & CV Shaft, Tires, Steering, Brakes and regear. Thats a very low ball est. Then you are going to have to do something to boost your power a little bit, engine swap or supercharger. probably another $4,000+ depending which way you go. I would say that these prices are on the low end for parts and labor times.
Why not go with a smaller lift that wont require as many mods?