Engine:
I/H/E, (Dali/Comptech/Comptech)
Chose to stay with a NA engine, never got around to doing a Turbo/SC (because of the possible downside/complications of having a FI engine).
Suspension:
Dali street/track sway bars front and rear.
Went through a set of Tein RA's coilovers with a 10kg/mm Front 12kg/mm Rear first and then changed to 10/10 setup for a bit more neutral handling (less oversteer).
Ended up with the NA2 NSX-R shocks/springs afterwards and never looked back (much better suspension, but not really street friendly) NSX-R front chassis reinforcement bar as well as the bottom bar.
Non compliance front toe clamp (SoS)
Non compliance rear toe links (Comptech) along with the corresponding bushings in the rear beam (Sos).
Brakes:
Stoptech BBK F/R, great kit properly proportioned, the only downside was the size of the caliper and finding wheels that would clear the front caliper. Spent lots of $$'s trying to find wheels that would clear the kit and that had decent weight characteristics. Pads Carbotech P+.
Wheels: Too many to list given the Stoptech BBK fitment issues that I had, all of them staggered 17/18 setups. Trying to get a 235 wheel up front on stock fenders without rubbing is almost impossible
.
Seats: OEM NSX Type-S seats, perfect seats for the NSX, downside really expensive and hard to get. Night and day difference between them and most other seats for the NSX.
Full disclosure: Don't own the NSX anymore, if I had the garage space I would have kept the car. People who claim that the NSX does not have a soul have never owned one. The NSX was a one off supercar from Honda, shame that Honda did not follow up with timely updates over the years.