I think if you have one that isn't of high enough serial number then you can send it to a couple of certain shops (I can't remember which right off the top of my head) or Smart Parts and they'll swap you one that is high enough and/or install it for you. I would ask about the possibility of that first.
Fella,
We can upgrade any Impulse to Vision spec whether it's old or new. All you've gotta do is give us a bell at Smart Parts Europe and we'll gladly hook you up with all of the info that you need.
Thanks,