Maybe I can help a little. I just upgraded to an'03 from my '02. Same scenario as yours. They delivered my truck to my lot at 6:30 last friday evening. It had been a horrible week. I was tired. I ached. I drove the truck home and did'nt like it. Slept that night got up and drove the truck to church the next day. Hey! This is NICE! WOW, even with less than a hundred miles on it this thing will RUN for a stock truck.
In retrospect, this animal is SO differant than my '00, '01, '02 that being a creature of habit, it took an hour or so to be able to be objective.
My only concern is I ordered the 3:73s instead of the 4:10s and until I hook it up and haul a BIG 5er with it I just won't know.
Good luck!