It finally happened. My poor truck finally blew the head gasket. It had been leaking coolant into the exhaust manifold for some time, and today it finally went out for good. I'm well aware of how much it costs to replace a head gasket on this truck. The price runs anywhere from $1,000 to $1,500.00. My question is, is it worth it? It's an '89 Chevy Silverado 3/4 ton pickup. With the exception of the head gasket it's very mechanically sound. Do I even want to bother? Should I sell the truck off as-is? If so, how much do you think it's worth? Thanks!