If it's just the clear coat, an orbital polisher (I recomend the Porter Cable 7424) should be enough. I have had very good results with MENZERNA "intensive polish" followed by MENZERNA "final polish". I buy most of my detailing stuff from
www.properautocare.com, they have an "ask the detail doctor" section that should answer all of your questions about how to remove scratches and what are the best products to use.