Chicago Engines maintains a supply of overstock and test engines. some have never been put in frames of vehicles, and they can vary in mileage from a test fire and run; to a maximum as high as 5,000 miles. Please see pictures of engines available and how they are dressed. No accessories are warrantied. Each engine may be dressed with different accessories when compared to one another. Example: one engine has an intake on it while the other one does not. All engine specials are sold as-is and cannot be modified from their current setup.