Looking to decode your pre-1970 Porsche option codes? Want to know what those codes are in your pre-1970 Porsche service manual? Then this is the post for you. We painstakingly researched all the Porsche option and equipment codes for every pre-1970 model year Porsche, including the 356, 550, 904, 911 and 912. The Porsche options list is really helpful if you are trying to research a used car and want to ensure you know what it is you are buying.