0 GM/Chev (HD) 8.1L, , Engine Assys, Fits to: , (Used) 2007 GM 8.1L, ENGINE ASSEMBLY- Displacement: 8.1L, Horsepower: 320, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921, Horse Power 320, Serial# TBD, Casting# TBD