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The Go Fast Bits Manual Boost Controllers are available in two types, one is suited for conventional pneumatic wastegates, and the other is for use with vacuum-actuated VNT (Variable Nozzle Turbine)/VGT (Variable Geometry Turbine) turbochargers commonly used on diesel engines.
This new head stud kit from ARP for the GM Duramax L5P includes a set of thirty-six M12 ARP2000 studs, twelve M8 ARP 8740 Chromoly intake valley bolts, thirty-six Chromoly steel 12-point nuts, thirty-six parallel-ground washers and a pack of ARP Ultra-Torque fastener assembly lubricant.