Quoting Diego:
Man that thing is clean. Where did you come upon your rs bumper? ( I'm having a friend look at, typhoon motoring, in japan, for me /ubbthreads/images/graemlins/smile.gif )
That's a Evolution bumper, regardless if its RS or not. If the RS is a 1987 to 1990 model or a 1990-1992 non-Evolution RS model it wont have that bumper.