Peace be upon you I am offering for sale: a 2013 GMC engine that fits 2007 to 2014 models. It has a ZR1 cam + LS7 lifters to disable the DOD system. High-pressure Melling oil pump. All original seals. Main and rod bearings + new cam bearings. New piston rings. New valve seals. New complete gaskets. New oil plug. Oil pressure is very excellent. Engine torque is excellent. The engine has been completely refurbished and tightened with a torque wrench. 15-day warranty. Price: 7000 including installation and programming.