ive turboed four standard engines up to a bar of boost and they made good power and lasted well. Bad tuning fucks engines. In order for a car to make 200 horsepower it needs 200 horsepowers worth of air and fuel, either helped in with a turbo OR cams and headwork, its still the same thing. turbos are actualy said to be softer on engines mechanicaly as the release of energy in the cylinder is more linear than the sudden release of a high compression NA engine.