MAHLE Original Full Engine Gasket Set - 6.0 L GM LS-Series 953564 121418 For both car types that

For both car types that are using a TH400 (Short Tail Only) or 2004RTransmission

Track Smart 3

1977-1978 GMC C15 Suburban

and does not require any calibration

NPT connection is all you need for installation

MAHLE Original Full Engine Gasket Set - 6.0 L GM LS-Series 953564 121418 For both car types thatMAHLE(R) gaskets provide world class sealing products trusted by OEMs & Technicians around the globe. Product Description: Engine Gasket Set Full 6. 0 L GM LS Series MAHLE ORIGINAL produces a broad range of products, including camshaft, connecting rod, and main bearings for a variety of engines. MAHLE ORIGINAL CLEVITE also offers a complete line of diesel engine components, from piston rings and gaskets to complete turbocharger assemblies.