1990 Toyota 4Runner 4x4 SUV 3.0L V6 Automatic NO RESERVE

This 4Runner starts and runs, shifts smoothly, 4 wheel drive works perfectly. Although, there is something wrong in the engine. A friend of mine claims it is the head gasket, and repair would cost $1,000. I have priced a rebuilt engine for $1,200, but am not willing to go there. Skylight glass is cracked. Interior is in pretty good shape. Exterior trim is missing a few parts and rubber seals have shrunk around windows. One rear quarter panel has minor damage. Tow package installed, spare tire rack too. Arizona vehicle, so no visible rust.