Interesting, I do a car search on models that use the 3600, and I also find the 3614 listed.
They do not say that tha 3614 is a smaller filter of anything, they just list it as an option.
Kind of makes me wonder just how far Rockauto will stray from OEM specs when they list a part.
If they list 10 different filters of varying brands for an application, it would be very cumbersome to look up the specs for each to see they will meet your requirements.