Well i'll chime in here. When i bought my 91 NSX my intentions were to only restore the car but after owning it just a short amount of time it became clear to me that the car was lacking in a few areas and needing upgrading.
I did restore the exterior using nothing but OEM parts (expensive to get all of the screws, clips and fasteners) but now that i am about to start on the interior i have decided to forget OEM and simply improve the areas that need improving.
I will not replace the dash with another factory one that will bubble.
The tape deck will be gone along with it the horrible sounding Bose speakers and EVERYTHING stereo related in the car.
I may go aftermarket with the seats or at the very least recover them in a new color (ivory doesnt do it for me).
Ivory carpet is an accident waiting to happen so new color carpet is going in.
I'm on my second factory antenna and it needs replacing again.
I replaced my disaster of an engine cover with a nice looking CF one.
My brake rotors were always rusty looking so they got replaced with zinc coated ones.
My calipers were horrible looking so they got PCd.
The factory rims on a 91 are completely cheap and dated looking so they are gone too.
The original exhaust sounded fine to me but those cat eye tips were awful looking so i went comptech and while i was at it i thought i would try to free up a few ponies so i went with aftermarket headers and tp.
Those are just the things i have spotted since November, i'm sure i will find more.
Honda did not build the perfect car here and unless you own a type R, S or Zandari then i don't see the harm in upgrading were needed.
I'm not a fan of most of the body kits i see either and there is some truly awful mods i have seen done to some NSXs but i don't think it takes a genius to realize that if you parked a stock NSX next to one that was tastefully modified and told 100 random strangers to pick one i doubt many would be picking the fat fives and the tape deck over one with a nice set of Volks that fill the wheel wells and a 7" lcd screen w/ navi.
