[Grumpy_old_fart]

Sethro, you may have an early 70 with 23 spline axle shafts, which, while strong, have a larger hub pattern than the 14 bolt.

the reason Dodge used a tapered washer was to keep the studs from being ripped off.

 

[Grumpy_old_fart]

19 spline Ford and Dodge 60s used them, as did early 70s.

mostly coarse spline stuff.