I am preparing for a first-time effort at removing original paint on plastic passenger cars. I have three Lionel 18" Railway Express Baggage cars (6-19080) NYC grey livery and one 15" K line PRR Brunswick REA baggage car (K4880-0016) in PRR tuscan red livery that I am going to strip for repainting. I have read many of the postings concerning methods of removing original paint, but noted that one message mentioned that different paints mixture/brands were used different times by manufacturers for the same car model. Has anyone has had particular success with using a particular process on the paint types of NYC and Pennsy cars noted. I have Testors Easy Lift Off, Pine-sol, and over cleaner at hand - unable to find 91% Isopropyl except out-or-reach prices on the internet.