Probably stupid questions compared to yours but I was wondering:

I am going to install the Hotchkis Leaf springs, does it change significantly the amount of pinion angle I should try to get?

What about snubbers setting for street cars, would you adjust them to become in contact at 1 degree? 0 degree?

Also, I've read somewhere that when you remove a driveshaft from the transmission you have to put it back at the same place in order to be in phase... I really don't understand this, is in it how the driveshaft is welded together that determine the phasing and not how you clock the yoke in the transmission?