I think that rear bumper is one piece. The black portion is painted the same as the 02 rear valence. I'll check with my friend later since he bought the complete set except for the ugly looking front bumper. Not sure when he is going to install them. A copy he got from Route KS. Do you think KS means Keichi Tsuchiya?
Man I just wish someone would make this black part for the rear of other NSXs...drool