Had a code that stated there was a large leak in the EVAP system.  What are the usual suspects?  I have a load of spares and hope to be able to shotgun the troubleshooting. 
 While i am in there i'll swap out the AOS for the relatively new one I have.  Fuel smells this strong make me worry about vehicle fires and I wonder what it is doing to my A:F mix and the condition of my MAF sensor.
The car is a 2000 Boxster with a 2002 2.7 swapped in due to the IMS failure.  Engine had a new IMS installed when the swap was done.
 
Other jobs on my to do list are to clean the rads, clear the drainage tubes (PO said they'd done that but I am always a sketic of work done by others :-D)