I've been trying to understand this as well. I also have a 2002 (seems to be the same as Eurostyle's but mine is a stick). From what I gather, in the US they only got this car in 2003. But, in Canada we got it in other years - 2002 and perhaps 2001.
But, are the Canadian 2002 (and 2001?) cars the same as the 'special' 2003 ones?
2002 540i M Technic
1993 325is RIP