I recently got a 2000 GT3 Cup Car and need to provide a "safe fuel extraction port" for SCCA.
There is a factory fuel port on the fuel filter, at least it looks that way. I can unscrew a cap and a needle valve shows.
Does anyone know if there is a Porsche tool available to extract fuel from there?

 

Sorry, I can't answer your question , but I'm sure Kevin Buckler at The Racer's Group can.
<a href="http://www.theracersgroup.com" target="_blank">www.theracersgroup.com</a>

good luck !