I have a stock radiator with only about 10,000 miles on it. I converted to a Mugen radiator soon after I bought my S2000. I also have a front sway bar (also converted to Mugen) and a front air deflector that fits into the nose above the radiator.

Radiator = $250 + Ship
Front Sway Bar = $50 + Ship
Front Air Plate = $15 + Ship

Above in a Package = $275 + Ship

I have Leather Headrest Cushions that press fit into the helmet hole in the seat back panel. $150 + Ship. These are practically unused. They now sell new for $225 + S&H.

I have an assortment of RM Racing billet covers for brake reservioir, radiator cap, fuel attenuator, clutch reservior and oil cap. $100 + Ship.

I also have a near-new set of brake rotors. $120 + Ship.