What year is your G? If you have a non-sport you can go with a sport bumper for a slightly different look. Aftermarket choices are real limited and typically have fitment issues.

 

 

I just compromised and get an S front bumper and lip spoiler and will get a splitter some day. Nothing out there I even remotely cared for. Japan has some things but...$$$$$

 

 

 

I would recommend on keeping the car looking classy as possible. Just get a front lip and call it a day. In my opinion changing anything to you car will make your car look cheesy and cheap. Your car is a luxury car not a civic.