Bob.. chances are you'll have 3.73s in the AWD. It seems about 90% of them do. You may get lucky and have 4.10s or not so lucky at get 3.55s.
I'm not sure what you're asking about the 3.55s... but since they're the worst gears you can get in the 5.0 theres no reason you would want to put them in if you don't have them.