WRONG...no radiator support needed...take it from somebody whose done it on their car... Honda-Pilot and I did this on my EH over the summer, it was actually a lot of fun.

you need:
fenders
headlights
hood
bumper
grill and grill molding

all the holes line up on the entire conversion except for the 2 outer clips on the upper grill. you also need to but 1" deep notches in the front bumper next to the headlights so the 99-00 bunper will fit on 96-98 radiator support. Its easy mod, just have to get it painted

Also, be prepared to drop the sideskirts to get the fenders off, and make sure you got your hood latch all lined up. I would suggest swapping the pieces one at a time, do one fender, then the other, then switch the hook, then the bumper, this way everything gets lined up. Be prepared to break a lot of the little clips on the hood, and make sure you get the 99-00 weather stripping that goes on leading edge of the hood, the 96-98 one won't fit.

and for legality sake, get 1157 amber bulbs for you turnsignals since 99-00 lights don't have the amber globe that 96-98 have. its easier to switch the bulbs while your doing the conversion...