As accurate as possible body shape is the key to any alloy bodied Cobra project. Most people willing to step up to an aluminium body will want an aesthetically correct looking car with all of the subtle characteristics of body shape, stance, ride height and wheel-to-body relationship that define a faithful replication.
I agree with others that a body/frame combination based on the already available FFR chassis would be a good way to go. Kirkham is the acknowledged market leader and gold standard in this segment so a new sub-niche at a lower price point would need to be established and exploited. Keep the focus on visual/external accuracy (as opposed to an inside and out engineered exact replication) and keep costs down by using as much already-available hardware and components as possible.
For accurate body shapes to replicate, look to cars like ERA, Kirkham and Exact Carbon Fiber, etc. Pay attention to the way the body sits over the wheels/tires and the overall stance of the finished car. Tires MUST fit inside of wheel arches and not protrude from the body.
Some other important visual details that Cobraphiles look for (others may be added):
Visible roll bar legs in cockpit
Radiator tilted back
Height and shape of roll bar
Engine compartment layout
Dashboard layout
Shape of radiator opening and
oil cooler intake
Windshield angle.
PS - Do not respond to personal attacks in this thread even if they happen. The moderators have probably had enough and the threads will be closed down. Nothing will be accomplished.