Built4thrashing wrote:
There is a slight spline change somewhere along the way that stops you interchanging some diff flanges.......
I also discovered this when swapping to NT 3.9 ratios in my sierra.
One WT flange slipped straight on, and all my others wouldnt budge.
The ones that wouldnt go on had more of a square shaped spline and the ones that would had a triangular spline.