You can pick up a2.2 or a 2.8 turbocharged Isuzu diesel engine for about €1000,- with 50.000 mls on it.
These engines are bulletproof thumpers!
However, it's illegal to swap a petrol engine for a diesel in the Netherlands.
You have to get your car aproved for the road by the government each year as soon as the car is 3 years old.