I have loads of pics, was easier just to link to youtube. will show some pics later tonight.
I went on the same theory. Much wider opening based on GTC series.
I think it's a either love or hate it kinda look though hence why not many people have done it.
"Downforce DF-R Side Ducts (CF) - NSX, all years (DF-AAA251CT)
[epp-1612] $750.00 "
This may be part of the reason...
Other than that I think they look pretty good if they were painted (since my car is red).
That's enough reason for me not to buy them.
I think they ruin the lines of the car. As well, I'm not sure how much functionality there is as ram air is negligible in providing increase power. Maybe for additional cooling.