where can I find stock 16 inch chrome wheels that wre on the 2004 and 2005 bonneville SE'*?

Start searching for shops that deal in aftermarket rims. I'm sure somebody has bling'd their car and turned in the originals. Their poor taste can be your gain Next stop is to call all the salvage yards in your area looking for them (might want to track down the RPO code for them so you know what to ask for)