alignment

I just replaced the clutch assy. on a 04, maxima SE do I now need to have the front end align, since I had the strut/ knuckle apart I did mark it before removal?

Alignment may go even when hittin pavement corner. That is one reason I dont loan my cars; who cares of alignment if the car is loaned?

DIY checking is easy fast and doesnt cost too much: http://www.cardomain.com/ride/748507/18
Inspect tire threads periodically, if worn from one side, alignment must be checked.

The answer to your q is that if it seats in exact same pos, no adj is needed. Getting it there is the trick.