The non-MIVEC should have a throttle cable; the MIVEC one is drive-by wire, no throttle cable.
2003, non-MIVEC
http://carphotos.cardomain.com/ride_...0002_large.jpg
2004+, MIVEC
http://imgc.classistatic.com/cps/bln...040hh4_20.jpeg
Hope this helps, and good luck!