Originally Posted by DerangedPony
Thanks guys, looks like I'll stay with drums for now. There is no chance they used 31 splined axles in the early 03s? My axle date is 4L10 but I dont know what year that is.....Dec. 10 200?.
If you have a 2003 FX4 Off Road, it is definitely 28-spline. "4L10" is a 4.10 ratio limited slip diff.