Wow, that looks like way more than just a "radiator". Dude that whole upper support is wrecked. So is the crash bar in the front. What sort of insurance do you have that they didn't total it out for you... ugh sounds like "The General" at work.
In any case, AHparts.com has a lot of OEM stuff off other wrecked cars. I bet you can get a ton of stuff from those guys. If they don't have it listed, just call them. They will pull any single clip, bolt, and panel that you need. They are located in CA and shipping should be very reasonable. I ordered over 200lbs of stuff from them to the East coast and it was very affordable. CHH has new OEM stuff but if you just need bits here and there, check AHparts.