Re: BMW M3 GTR engine has incorrect HP
To my knowledge the E46 M3 GTR came in 2 versions. First introduced in 2001, and rebuilt in 2004 or 2005 (I don't remember the exact year). The 2001 was initially banned, due to it not meeting the regulations for Motorsport at the time, hence the 2004 or 2005 rebuild.
That's the story that I've heard at least. Also, as far as I know, the M3 GTR in Most Wanted 2005 was based on the 2004 - 2005 version.