My aunt gave me her 1999 Ford Mustang Saturday. She told me that there was a blown head gasket. Knowing that it had set for 2 years, untouched, I took my battery from my other car and put it in the mustang. It acted like it wanted to start, but just would not. Now, I'm having trouble finding out where to get parts and how much it will cost to be replaced. Like I said above, it wouldn't start, and a guy at one auto body shop told me he couldn't replace JUST the head gasket, he would have to replace the whole engine. So I need to know, if that is true; And approximately how much it would cost to fix the problem.