How do u find the right size rear shocks for a 2000 dodge durango?

I have a 2000 dodge durango and i need new rear shocks. They are really rusty and sqeak really loud. I need to no if there is a place on the car or something cuz i dont want to buy the wrong ones. I looked all thur the maual but nothing.|||you can call any parts store and they,ll be glad to tell you the part number and what all will fit it ,and its totally free,good luck.|||Any auto parts store will be able to assist you in getting the correct shock for your Durango.|||http://www.autozone.com/autozone/catalog鈥?/a>