The most authentic replica vehicles are cars based on the actual specifications of the car that they replicate, such as the Superfomance Shelby Cobra replicas. These vehicles are sometimes sold as kit cars for assembly by the purchaser, but some companies also assemble them for direct sale.
The Superformance MK III Shelby Cobra replica is perhaps one of the most authentic replicas available as of 2015 and is licensed by Carroll Shelby Licensing as an authorized copy of the original Cobra design. The attention to detail in dedicated replicas may make them almost indistinguishable from the original vehicle visually. In addition, well-built replicas are often safer and more reliable than the cars they are based on.