Here are some useful links for Clothing, Accessories and Collectibles:

camaroperformers.com
       Magazine featuring just Camaros


carsinbarns.com
       Dedicated to all those cars found along the roads, behind barns, in barns or whever their owners left them


gmhightechperformance.com
       Magazine featuring Camaros and other GM vehicles


yenko.net
       67, 68 and 69 Yenko Camaro VIN list