Remember that not all Cobra replica bodies replicate the original Cobra shape. Find a shape that you like, and go with it.
There used to be a magazine type book out there called, "The Complete Guide to Cobras and Cobra Replicas", by Curt Scott. His web site is
www.cobracountry.com There is also a video worth checking out, called "Bitten by the Snake". Don't know if it's still available.
You took the first right step by joining CC. Brace yourself: everyone here has on opinion.
DD