yes it will. at automotiveforums. under the 626 section, there is a guy talking about how he replaced his front bumper, and back with the new 2000 front and back. its possible, just takes some mods to do it.
it has the bigger mazda logo...it looks more aggressive, it has more lines and the grille part is a lil different, and it might even have fog lights, but im not sure most of them i see dont, but i thought i saw some that did too. but that might be the 01 or something...not a major difference, the biggest difference is the front bumper, with the tail lights (the ones i want, lol)