Does anyone have the NSX-R pedals? How do they feel?
but for the gas pedal, you're going to need to have a shop cut the pedal to allow the gas pedal to physically fit on the arm, then you can rivit it onto your existing gas pedal arm.
I found a shop that was willing to order the ITR pedal set from Honda, drill out the rivits, and ship the pedals only (the only parts you can use) for $99 shipped. You would then rivet the clutch/brake, have the gas pedal modified, and you're good to go.