I would suggest modifying the comment in the listing:
Quote Originally Posted by VintageExcellen View Post
… For whatever reason Porsche made this system optional on S and RS cars…
… to something like … “For whatever reason Porsche made this system optional on 911S in USA and Canada for model year 73” [/QUOTE]
IMG_5499.jpg

Its is a more defendable statement than current wording — the last three words are not correct imo. Doing that doesn’t affect the sale. In fact it possibly opens up potential to include one more car that needs this equipment … the 73 RS that might still be without oil cooler!

Steve