Flawed test? What gears have I?

Thanks fellas, looks like I have the 2.76 gears :-( I was hoping for 3.??

That is unless someone has swapped the gears, which I doubt as I am the 3rd owner of the car and it has remained mostly stock. Which leads me to another question...

If I was able to locate one, is a Sure Grip a bolt in replacement for my third member? And if so, will it come complete, as a chunk (as I have heard it referred to as) with the ring and pinion gears? Hopefully with the lower gears.

And if so, how can I identify the gear ratio in a third member that is loose from the car?

Many thanks to you guys.

Mark