The 02 headlight is too big for the existing headlight bucket. Because of this, you will need to some how slightly widen the headlight bucket area where the 02 headlight adjustment piece comes in contact with it. If this is not wide enough, then the headlights will not fit properly. There are four mounting areas for the headlights. One in the rear, on the bottom, near the radiator, and on the front of the headlight. If you go to the headlight diagram on Acura Carland's website
www.acuraautomotiveparts.org, you will see the two brackets that you need to buy in order to mount the headlight in your NSX. These brackets mount to the headlight on the bottom and in the rear portion of the headlight. I believe
SWR can get brackets which allow you to utilize the fixed mounting areas to mount the front part of the headlight and the one near the radiator to the car. If you don't go this route, you will either have to make some brackets for these locations or don't use any at all. Here are some pics of the brackets from SWR:
<img src="http://www.route-ks.com/img/item/other/040210/040210_17.jpg" border="0" alt=""> <br /><br />
<img src="http://www.route-ks.com/img/item/other/p02.jpg" border="0" alt=""> <br /><br />
Here are some pics with the hood up:
Hope this helps