My 3.6 in my car is a 2005 and has the upgraded larger IMS that requires engine disassembly to replace. My 3.4 in my 2008 Cayman S is the same. So I had this done when I had the clutch replaced in my Cayman S and the flywheel fixed in my Boxster.
https://specialtycarsservicecenter.com/projects/cars/2006-997-m97-engine-ims-bearing-seal-removal/