there is no difference in size when you get down to it. not to mention most ps3 are 4 pin hall sensors, whereas the xbox are three pin potenimitors. Not saying it cant be dont, because it has, but many very experianced modders have tried and failed. Good luck.
Not to take anything away from the viking website, you may get better luck from ablegammers for info about usage, and Acidmods for info about how to do what you want.
This forum is focused around its specific product.