Hello-I'm new to the board and a new owner of a 73 911 E with full S options (and very happy about it). The previous owner wasn't sure if the numbers matched on the engine/body. Where do I look in the engine bay to check this out? I noticed a number on the top of the fan shroud-but it was about 3 digits longer than the body numbers, and had an R at the end. Any help is appreciated.

David Proctor
73 911 E
Nashville, TN