Drift you are right they did re manufacture that rear:
"One of the "features" of the outgoing S2000's rear suspension was its tendency to exhibit bump steer at the limits. Honda's engineers have attacked this issue from several angles. Rear toe in was reduced from -0deg 19' to -0deg 10'. At a 50mm bump deflection, toe-in has been reduced from -0.19 degrees to -0.05 degrees. Secondly, the rear roll center was lowered from 101mm to 92mm. Honda claims improved roadholding under full suspension compression or during severe body roll situations.
• Honda claims improvements in overall stability, steering accuracy/effort/feel, bump steer characteristics, wet performance/hydroplaning, high-speed stability, smooth ride comfort, choppy ride comfort, and at the limit controllability.
• steering wheel lock-to-lock increased from 2.4 to 2.6 wheel turns.
• steering ratio lowered from 13.8:1 to 14.9:1 "
stolen from here:
http://www.timeattackforums.com/for...2722-want-build-s2000-track-car-year-buy.html
Maybe this will fix it, and cheap to boot:
http://www.nengun.com/spoon/zero-bump-steer-kit
Do you think I could get the AP2 rear suspension updated parts and bolt them on an AP1? That's a lot easier for me than the engine swap on ap2, So.Cal. is **** when it comes to swaps...