Most of the serious restorers use reproduction batteries designed to look like the original “Tar Top” ones. Ferrari used batteries from several different manufacturers. The correct battery for a particular car can be found on page four on the cars that have “build sheets”. If the build sheet information is not available I suggest that you look in Keith Bluemel’s wonderful book Original Ferrari V 12, 1965-1973. The batteries are listed along with most of the major electrical components. The reproduction batteries usually have a 4″x6″ smooth panel, on the long side, for the manufacturer’s logo. When you call for a reproduction battery you will need to know all of the dimensions, the positive and negative post layout and which side you want to use for the logo. A sketch helps. The battery company people cannot relate to Ferrari models and will be looking for this information. 4″x6″ reproduction manufacturer’s logos for batteries. SAFA 65 N85..Used on the 275 GTB/4s.