The kit includes 800cc injectors, high flow fuel pump, fuel rail, and fittings.
The HKS Evo X Complete Fuel Upgrade Kit is good for setups up to 500HP.

HKS Fuel Rail Upgrade kits are high-performance fuel delivery units that are designed to properly supply the additional fuel needed for high boost/performance applications. HKS Fuel Rail Upgrade kits are direct bolt-on replacements of factory fuel rails, and allow for larger top-feed injectors to be added. HKS Fuel Rails are machined out of aluminum and anodized HKS? signature purple for durability and visual appeal.