2+2's are in demand, it's still an E-Type. But if rust has claimed it, the price of restoration would be beyond it's value, and the engine would be the least of the problems. With these cars, rust is like an iceberg: you can only see 10% of it because they rust from the inside out. The most critical spots are the frame rails, the sills and the box section below the back seat. A reasonably restored matching driver would be worth $70K. A restored car with a V8 maybe $20K, and you'd have to hunt for a buyer. I can help, if you really want to tackle this.