Thor,
Go to
www.cobracountry.com. You'll find "The complete guide to Cobra replicas" as well as the video, "Bitten by the Snake". The guide is a list of manufacturers and some do's and don'ts including the "10 golden rules for buying a replica". The video is similar, but with more practical information and some great footage of Cobras in action. The video is 90 minutes long.
Cheers
Jim