The difference in the '02 that is significant with regard to ARB/TJM/Calmini bumpers with the tubes on top is that the plastic grille area just to the inside of the headlights juts out further ahead of the frame rails than the '01. The vertical supports for the tubes that pass right ahead of them will not clear the grille. You can notch the plastic, or the '02 Calmini bumper will simply stick out a little further or something.
Brent