Hi Matt,
The most popular kits we sell and hugely popular in USA are the JWT kits, see here: https://www.torqen.uk/nissan/350z/powertrain/clutch-flywheel-packs/664-350z-de-jim-wolf-technology-jwt-clutch-flywheel-kit-nodular-iron-26lb-flywheel-900kg-clamping-force-l3503-ncfsd.html
or https://www.torqen.uk/nissan/350z/powertrain/clutch-flywheel-packs/1895-350z-de-jwt-jim-wolf-technology-clutch-and-flywheel-combo-1200kg-clamping-force-l3503-ncf-ktp.html
Also, while you're doing the clutch and if you haven't had it replaced before, worth doing the slave cylinder, depending on your car year, you can find these here: https://www.torqen.uk/174-ancillaries