do a search for radiator.
I got mine from autozone, and made them price match rockauto.com.
it is a brass/copper center with plastic tanks just like the original, and I got it for $280.
everyone else local was over 500 bucks, dealer included.
if you can wait, there are a lot of good prices online
I did have to modify mine slightly, but the post tells how. it took like 5 minutes with a dremel, probably 15 minutes with a file