Competition Sounds Works in Artesia did the work on my NSX.
Corner of Gridley and Artesia Blvd. Not too far from the 605/91 fwy.
They installed a Beltronics Radar Detector, fabricated a custom holder for the digital readout, installed my Heads Up Display unit, and fabricated a new center console when I moved the stereo unit.
EXCELLENT workmanship. Fair prices, NSXCA discount.
Talk to Mike. Tell him Brad with the black NSX sent you - he'll take great care of you. They are always busy so you'll need to make an appointment.
I'm currently away on business, but it interested I can give you the address and number at the end of the week.