I have recently purchased a '64 Impala SS... the car has 70,000 original miles. I have plenty of expertise in body/paint...but need info on the motor/exhaust. The car is completely original with interior only one month old. The undercarriage is immaculate. I don't want to race the car...but want plenty of horsepower and a great sound (exhaust) from my car...any help???

Thanks for all suggestions