www.LarryMacedoMS.com is a site that reviews to quality of work and the quality of customer service of Macedo Motorsports, near Orlando, Florida. He apparently works on all kinds of vehicles now. So please tell your Viper and non-Viper friends to check out that site so they can choose wisely before sending their vehicle there.
BTW - Larry Macedo used to work for John Hennessey if that means anything...