I was going to put this in the perfomance mods section, but it only applies to the coupe.
SuperchargersOnline.com :: Product: ProCharger C-2 Supercharger Kit w/ High Output Intercooler for 2003 Nissan 350Z (7psi)
'03 platinum coupe
why cali specifically? i hear turbo oesnt work well with heat, but texas or AZ are much hotter, or are you referring to something else that's only in cali?