I need some help!!

Is it possible to clone an active sim card to use in another phone legitimately?

The reason I ask is that I have just bought a car which had an original Nokia hands free kit in it that was integrated in to the stereo.

Unfortunately, I have an 8310 and the kit is for the old 6130. Luckily I happen to have an old Orange 702e (which is a 6130) which I can use in the car but I don't want to swap the sim card round the phones all the time?

Any ideas?

Thanks in advance

Ultra238a