Typical weight saving and higher performance stuff.
Seats (red or black Recaro CK)
Mesh Engine cover with cover stay
Dash and door panel Material
Center Console (Different Material)
Steering Wheel (Momo with red Stitching)
Wheels
Shift Knob and boot (Boot: Similar or same as NA2 Type S)
Suspension
Sway Bars
Chassis Bar
Single instead of dual glass between the cock pit and the engine bay
Tires
Gearing and Final Drive
Differential?
Stereo and A/C delete (Optional Equipment)
Power Mirror Delete
NSX-R Door Sill Plaque and door emblems
NSX-R Red Front Emblem
ECU
Lack of sound insolation material
TCS delete
Lighter trunk spoiler
Black rubber radiator cover
There are probably more, but those are from top of my head.
It will be easier to covert than the NA2 Type R
for about 68 grand to 85 grand
Here is a
slightly modified one
A wide body NA1
NSX-R
A
stock one
Another
Stock One
A
Silver One
For laughs and Giggles, a
NA2 Type R (Price not disclosed/Negotiation required)
A Custom
NA2 Type R for about 110 grand