Dana44 front front axles have balljoints as part of the assembly. It is how the steering knuckle works. Axles seal on the diff housing and pivot joints are basically exposed universal joints. Ball joints are on the end of the diff housing and the knuckle pivots on the balljoints. Very reliable and repairable setup, unlike the Japanese style with the big ball on the end and CV joints.

Basic setup can be seen here:

http://imageevent.com/moparnorm/skem...=0&w=1&s=0&z=2