^+1
Is it a 2 or 4 door?
if it is a 2 then you need some real quarter panel work,
if not then go with the above advice.
You will pay just as much, if not more, having that damage fixed as you would buying a new panel, and if it is the same price why not get a new one!

that way you will come out ahead being that there is no filler on your panel.