Hello Fellow Subies, Update on my situation: Took the car to Subaru this morning and the verdict was Bad Battery, replaced under warranty; Happy Dance here!
As previously stated, CCA on the old battery was 356. The new battery part number is SOA821B400 and there's no specs data on the top of the installed battery. I've searched high and low on the net and could not find specs on the battery... it's tucked in a nice Subaru case so I can't see the sides for info. On an Outback forum complaining about batteries, one member states it's 550 CCA so I'm happy with that. Funny stuff: in my research, many of the sites said this battery was not suited to fit my Outback... it's kinda hilarious, the info that's out there. One more thing: I called a dealership in Duluth Minnesota (very cold up there) and the service advisor up there said they would replace my battery with one @ 550 CCA so I guess it all fits together.
Thanks Guys, for your input on this topic.