There is also a nice Cutter and Buck windbraker available from the NCM, with the Z06 logo on the front. I picked one up last fall when I visited the factory. The color was red w/ a black collar liner. No other colores were available at that time.
Try Halo Concepts in Troy Michigan. I have a nice black leather jacket from them that was made in Canada, and has a Corvette logo embossed on it. Have also purchased Cutter and Buck brand Navy Blue C5 jackets for Mrs Zippy and I from them. Phone 1-800-735-0432 and ask for Mel Golusin. On the C5 Registry web site they mention a 10% discount for Registry members. Disclaimer: I have no connection/affiliation with them, just a happy customer.