So I picked up a car real cheap because it has a cracked head. Not knowing what else is wrong I went to the local U pull and found a car the same year, model, millage (150,xxx), etc and started to gain access to the head. Then I looked and the car is in perfect shape. 'No start' on the window. So the question. Do I grab that head or do I grab one from a car that has 80,000 more on the clock, but I know it was running when it came into the yard because both bags are blown.