I am new to this site but not new to Porsche cars having owned a Porsche shop for 36 years and being in the business for over forty years. So my question is the VIN number on my 6/68 karmann coupe is 11835532 The forth digit is a 3 so is it a S or not ? There seems to be some confusion as the 911 S was not brought into the USA in 1968 This was a special order car VW Pacific Culver City CA by a John Turnbull could it be a S brought in to the USA under the radar