I thought I read on here a long time ago that the f450's rear drive shaft t-case and rear axle u-joint plates where bigger than a F250/350's. The F450's u-joint plates where interchangable because the 4 bolt flanges had the same size bolt pattern...But they used a bigger u-joint.
I can't find it now...
Brent.
I can't find it now...
Brent.