The 460 is generally a torque monster, so driving a Cobra with one is like riding a dragon. Keep it calm and reigned in and all is smooth and sedate. Just always be ready, though, before you jab it with the spurs - because you're about to open the gates of hell!
Best piece of safety equipment is between your ears. The cars are not inherently unsafe - as far as light, open machines with 60's era ergonomics go - and they actually drive nicely unless provoked. If you're cut out for all that goes with Cobra ownership, it's the best fun you'll ever have in a car.