as long as the person that installed the springs assembled the Jeep back right. It should be a bit stiffer ride, you wont get much out the springs since it is a 4d anyway. the shockers better, being gas.
Its a high clearance vehicle, it wont handle like a car. Jeeps have never been a good car, nor truck/modern SUV's. It is a Jeep still with all the comforts they have added.
yes it has a sway bar front and rear.