if you cant find a good replacement, then it is fixable. personally, i would replace it. it is going to be alot of work to shrink the stretched out metal. only an experienced bodyman with lots of repair time under his belt will be able to PROPERLY fix that. someone could slap some filer over it and make it straight, but the metal really needs all the attention in this case. if the metal is not properly straightened, then the repair wont last very long. plus, most body guys cant straighten all the bodylines very well any way, so you might not be happy after it is repaired.
save yourself the headache and just replace it.