Porsche 930 Spline pressure Angle

[joamonirl]

Making Custom axles for Buggy, using 930 cv's. In order to purchase Spline cutter I'm needing to know pressure angle on the splines. Thread on here shows 30°, Gkn shows 45° pressure angle. Any help?
Tia

 

[bdkw1]

45*

 

[joamonirl]

45*

Thanks