Well I'm confused... in the last referenced link, centerline shows a mailburacing drawing and says it does not show pinion angle (he is correct, it shows pinion to driveshaft angle), but then he shows an Inand Empire drawing that shows the same thing!
What I gather is that the pinion and trans output shaft angles should be parallel (that is, equal but opposite sign angles) to eliminate vibration .... AND (here's the kicker) the U-joint angles should be 1 (min) to 3 (max) degrees to minimize U-joint wear.
Setting the former does not guarantee the latter... it would depend on how long your driveshaft is. Am I missing something? Can someone clarify this ror me?