umm, well, you DONT need a bumper unless your going for a different bumper style.....
If your just want the grill and headlight style...then you'll need 01-03 parts...
01-03 Head panel
01-03 'Ford' emblem --Unless you get a grill with it on already
01-03 Headlight retainer clips --go to Ford and get them...there are 2 different sets for each headlight.
Any other misc.. bolts and clips, I just pulled off my old grill assembly