Does anyone know if they make a Chrome radiator guard/cover?

They do - it may be a Highway Hawk product. I've seen 'em on eBay occasionally (usually on sale out of the UK). They look sharp - it's just finding 'em that's the trouble.

These guys have one here if you want a new one:
http://www.cruisercustomizing.com/detail.cfm?model_ID=17&Category_ID=7&manufacturer_ID=15&product_ID=7525
Oops, sorry, I didn't notice at first that it says it's a discontinued item....

Heres a new one for you at bikercom.com .
just got mine,I think when there gone ,there gone,wouldnt wait long to order.
http://www.bikercom.com/WebCommerce/Sistema/200601/infoproducto.asp?MiTienda=100420&MiIdioma=EN&CodProdLT=231097

I would make sure they have it in stock before ordering. As stated, they are discontinued.

The slotted ones are discontuned for sure. Have been for quite a while. The open ones though are still available but limited
One bad thing about Bikercom.com is they are based out of Spain. Shipping is expensive
For the listed Rad cover..
Subtotal: 59.26
Shipping: 33.50
TOTAL US$: 92.76

Didnt have any trouble with bikercom.com . just got mine last month.
took about 3-4 weeks to get it though.