2007 GM/Chev (HD) 8.1L, Truck Delivery, Engine Assys, Fits to: Workhorse Custom Chassis W62, (Used) 2009 GM/Chev (HD) 8.1L, ENGINE ASSEMBLY- Family Number: 9GMXH08.1503, Displacement: 8.1L, Horsepower: 320, Reference images for condition. 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, Truck Year 2007 5B4MPG2G573430833