2008 Allison 3500RDSP, Truck Delivery, Transmission Assys, Fits to: GMC C8500, (Used) 2007 Allison (AT), TRANSMISSION ASSEMBLY- Model: 3000RDSP, Serial Number: 6510805479, Engine: Isuzu 6HK1XL, For more information about this item, give us a call.We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921, Serial# 6510805479, Truck Year 2008, VIN 1GDP8C1B38F413074 1GDP8C1B38F413074