Wow... You even quoted the part where I specified the only model of Ranger to come with a 31 spline axle but argued the point anyway.
The only model of Ranger to come with a 31-spline 8.8 is the FX4, which is a late model variant. He's asking about an 03.
Sorry my reading comprehension isn't what it used to be... but it looked like you were implying that an 03 couldn't have 31 spline axles from the factory...only some type of "late model variant"