What is the average cost to change the sway bar and end links

Try this: www.repairpal.com/estimator That's one way to get some average cost expectations. But, with the additional concerns present with your vehicle, it's really hard to say you can count on "averages". Damage makes it hard to really estimate until a technician can evaluate a vehicle first hand. Your guess of a sway bar and links may be missing some of the bigger picture.