I doubt they'll get to '03 level performance too, but they may get close. Manny missed a month, RF production was nowhere near what Drew is capable of, SS too, and Crisp and Tek had epic career-low seasons. Everything fell right in '03, and if it does this year, I can easily see them scoring 925+ runs.
And, while the BP looks like '03 going into the year, I think the rotation looks much better, and the defense looks better too. They may score a few less, but I think they'll prevent more than the difference at the plate. The differential matters more than the production.