looks great! Did you do the handles yourself? I brought mine to a local autobody shop but they werent comfortable doing it because they felt the paint would rub off. How are yours holding up?

i took mine to a local paint shop. The owner is actually a Z owner too he is on the forum as well. He color matched them for me. Chipping if done properly shouldnt really occur, unless ur going offroading. your biggest problem is keys/rings/other hand jewellery they scratch the paint. Also if you paint them i would advice avoiding the use of the button on the door handles. It can easily chip dew to the rubbing.

i was considering repaint my front bumper cos it got lots of dents do you konw what kind to what type of color should i use?

You can look on the sticker on the chassis under the driver door, it says the paint code there. for the black one its Magnetic Black (G41), heres a reference for the rest http://gtcarlot.com/colors/Nissan/All/370Z/. if you go to a paintshop they will know what to do with that code and get you color matched perfectly.