You confused me for a minute, because your username is 1700, which is 04+, 99-03 is 1600cc. I just made the swap with my 01 wheels in favor of 05 wheels. There's almost no difference I could tell with the exception of the pulley. I reused my old spacers on the new wheels, and everything bolted up perfectly. The 04+ front rotors are floating, so your chrome covers won't completely cover the gaps.
Here's the 99-03 rotor next to the 04+ rotor:
Here's the gap after you put on the front covers:
And in my signature is the wheels on an 01 R*.