Here are some racing springs for 2JZ.
They are rated at 85 psi seat pressure and can rev 2jz up to 11,000. They are high strength dual springs with tatimum retainers from KMS springs and retainers are perfect for high rev applications.
For strength, weight, fit, and finish KMS retainers can go head-to-head with any leading brand.
KMS provides the highest quality springs and retainers at a better price.