With my 3.0L auto tranny the stock gears were 4.88s with 31" tires. With 33s going to 5.29s put me back to stock, numerically. Generally, my advice is always go to 5.29s with 33s with an auto. General concensus for manual trannies is as everyone else said.
Autos shouldn't use the same gears as manuals, in my opinion.