Maximum Ball Joint Angles - 'Cuda verses Viper

[DA4AD]

I'm Looking at using Gen 3 Viper front suspension on my '70 Cuda.
The stock 'Cuda UCA's (K772 Ball Joint) have the mounting locations are at 15° off horizontal with the ball joint angled at a 90° (vertical) and the Viper UCA's (K778 Ball Joint) have the mounts and ball joints at 0° (horizontal).

I checked the K772 joint and can flex to 40° off horizontal.

Question is, If I used the Viper UCA at 15° would it over stress the joint???



First picture is the Viper UCA. Second 'Cuda UCA.

Thoughts???