so what exactly is an RS?

[BEEF]

first of all, I am in the US so if this is something that isn't available in the US, it would make sense.

I have heard talk of people looking for an RS and all. what makes it so special? if I had to guess I would say that it is a particular package with a body kit and maybe a few more bells and whistles but for someone that has one, what is different from it and say the american S model?

it is more of a curiosity.

thanks
thebeef