I found the chrome steel one here and also at another place online too.
http://www.manestruckparts.com/store...Category_ID=12
Classic Chevy Parts has the original GM outer grill that was made by GM and they stopped making them about 3-4 years ago and they have a some left in stock. It's $875.. a little pricey but might be the way to go?
I'm familiar with the stripping of the anodizing process. I have had good luck with oven cleaner.. The part I struggle the most with is getting the scratches out.. I've tried 400 and 600 wet sand paper and it's not getting them out. I feel if I go any lower I will mess i up even more.