I have a 2008 Cobalt LS sedan and want to possibly give it a little more power. it has over 120,000 miles on it cause the previous owner took it all over the country. I asked a friend who works on cars a lot and services cars for his friends if it'd be good to go to a junk yard for a lower price on a turbo. He told me it'd be too much trouble to put it in even if we found one that fit my car. Any suggestions on what i can do to add some horsepower and boost acceleration? I'm on a tight budget but can save for something.