this is a link to
www.modacar.com and they have the Comptech SC kits and they list some Turbos but no kit..
http://www.modacar.com/products/Honda/S2000/MODAFOIN/
Also from
www.turbo-kits.com they are in the process of developing the turbo kit for that application:
http://www.turbo-kits.com/s2000_turbo_kits.html
Hope these couple of links may help but good luck w/ that...