New water pump.
Heads needed rebuilt.
New fuel pump.
Brakes rebuilt.
You cannot kill this car and it has enough power to smoke most "pure" muscle cars. It's very rare and I love this car.
66 Mercs are well built. Frames have a tendency to rust through as this was designed as a unit body with a "flexable" frame designed to absorb road shock and keep the car quite. the 410/428 engines are amazing.