The G4S 6766 turbocharger upgrade for your 1986-87 Buick Grand National/T-Type/Turbo Trans-Am features a forged milled 64mm 7 bladed compressor wheel rated at 800+ flywheel HP. This latest generation compressor is best suited for an engine with ported heads, 3200 stall speed converter, camshaft and supporting mods. The high efficiency characteristics of this at boost pressures above 30 psi make it perfect for E-85 and alky injection. This turbocharger features our ceramic ball bearing center section for quick spool and long life at high boost pressures. This turbocharger will come complete with our exclusive waterline kit for proper cooling of the bearing section, and our premium oil feed line with proper oiling restrictor fitted. This kit hooks up to the often un-used throttle body heater circuit found on the OE metal heater hoses. Available with or without a wastegate actuator, and either a .63 or .82 A/R turbine housing.