2007 GM/Chev (HD) 8.1L GAS, TRUCK DELIVERY, Engine Assys, Fits to: Workhorse Custom Chassis W62, (Used) 2006 GM/Chev (HD) 8.1L, ENGINE ASSEMBLY- 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 ., Serial# TBD, Casting# TBD 5B4MPG2G873430504