It depends on what you intend to do with your car, so the answer is both "yes" and "no".
If you are not going to change the rear bar from OEM, then probably not BUT, it will shorten the response time of the RSB since you will eliminate the sloppiness of the OEM rear mount.
If you go to a larger RSB, then "yes" for the above reason as well as a stronger mounting point for the larger bar.
Since you have an '02, many have simply used the OEM '04 rear mounts, which are a stronger upgrade from the '02s and a lot less expensive than the Whiteline unit, but not as strong.
To me, it was worth the expense.