Im considering buying a supercharged 1995 impala ss for $5000. It has 80,000 miles, i am 18 and dont really know about superchargers im not a racing fanatic. Are superchargers the ones that do the whistle noise? How expensive are these to maintain? What does it do to gas mileage? The impala only gets about 20mpg and i dont want to spend my paychecks on gas. Should i buy it? Its $5000 with a vortex supercharger and 22 inch rims, the guys says that the only problem is that it drains the battery super fast. Should i go for it?