Download BiTornado and install it: http://bittornado.com/download.html
Search this page for Initial D and click the links to start downloading: http://downloadanime.org/ (The filename will have extension .torrent)
Speed is about 100KB/sec+ per file (if you download both simultaneously).
BTW, You will need the latest DivX codec (www.divx.com)
EDIT: Ok it seems the subs (translations) used in these videos aren’t
real and are more ‘rice’ oriented. Probablly funny to watch after you have
watched with the real subs.