Just bought a 1984 300Turbo diesel.I had alot of smoke and shaking so I took it to a local shop. Today I was told the car has a cracked cylinder and damage to engine block. I am pretty sure that translates to a new engine. I have love for this car and it is very clean but it is worth it? Should I just walk away? Paid 2500 for the car and already put 500 into it.