Not sure why so many have problems with this. If you get the pinion about 1-2 degrees less or more than the trans all should be good. Because of axle wrap, torque and suspension movement the angles constantly change. A good article on modified suspension drive shaft angles.
https://4xshaft.com/blogs/general-te...veshaft-angles Note that terms like close are used. Exact is not mentioned. There are several other articles on the site on vibrations, etc. A working angle above 3 degrees will not kill the ujoint, just affects longevity. This is addressed in the article and the answer provided may surprise some.