Sky Hawk body
Fang 2 wings and blades.

The original Fang was such a great asset for Cobra they decided to try and improve it. The Fang Prototype featured the one big thing the original did not, a closed cockpit. This would allow it to fly at a higher altitude. It also featured dual rotors that once airborne could rotate forward like plane propellers this also made it much faster. This is exactly what Cobra wanted however it was also much more expensive to build and therefore it never made it into production. Years later a much cheaper version was built this is what we know as the Fang 2.