I have a friend that had a car computer and a head unit installed in his WRX by Kar Tunes. They do excellent work. My sound system was installed by Mark at Myer Emco in Bailey's Crossroads. They do excellent work and have done ALOT of NSXs
I have done a ton of nsx's over the years. I have refined the nsx stereo. Started out a single boston pro sub in the floor losing no leg room at all on the passenger side, custom dash that is properly done rather than some shops that simply bondo the dash which causes warping issues after two weeks. I offer a lifetime warrenty on my installs. My Current nsx system is Focal Krx2 comp set in the front doors, full dynamat, Two jl audio 6w3v3's in the floor which blow away the orginal boston pro 10. And a radio of your choice which I mainly use alpine decks due to crossover and 4v preouts. Mcintosh amps,focal amps and jl amps are used on my systems depending on what price point you want to be at. Custom painted amps/trim panels all done in house, also I offer top of the line alcantara leather/seude. And have a in house company for wheels and tires if desired.
For all my old Nsx clients I have opened up my new shop, myer emco no longer does car stereo so I started my own place. My shop is in Sterling Va. I am dealer for JL audio/Focal/Kenwood/Alpine/K40/Viper.
Designomotoring.com call me or stop by to check out my current projects and cool cars in the shop.