Limited Edition of 500 Pieces. Gorilla Watch Fastback GT Espionage Limited Edition FBY22.0. The craft of restomod is one of the most demanding of custom automotive disciplines, requiring skills in traditional fabrication techniques, cutting edge materials and methods, and design seamlessly weaved together to expand the performance and style of vintage cars. The Espionage gets its name and color scheme from a 1965 Ford Mustang built by the legendary custom car builders, the Ring brothers masters at the art of restomodding.