Not Ranked
I'll say this. It kind of depends what you are going to do with the engine. I built a truck a few years ago and thought the numerically lower axle ratio would save me on gas for longer trips. The thing sucked fuel. Performance was pretty good. I changed the rear axle ratio to a 3.55 and it was night and day. The mileage didn't change, but the truck ran a LOT better. The low gear ratio was out of the range of the cam/intake/carb combination when driving down the road at cruising speed.
Granted the truck was a lot heavier than a Cobra, but it is something to think about especially since it isn't a 9" where you can just replace the third member.
Just a thought.
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