Question about pinion angle and driveshaft angle

[abadsvt]

Hi All, I was looking ahead on my project and was hoping for some insight. I have always been told the rule of thumb is 3deg down on trans and 3 deg up on rear diff for pinion angle. My question is if the trans yoke is on a different height than the rear diff yoke should you angle them at each other then do the 3 deg up and down? For example. Say you trans yoke is 6" off the ground and your rear diff yoke is 13" off the ground. Do you set them up at parallel to the ground then do 3 up and 3 down (not worrying about the height difference) or do you angle them at each other ,lets say it is a 10 deg angle so you set the trans aiming up 10 degs then angle the rear diff 10 degs down and then do the 3 deg up and down after the 10 deg is setup? Did that make any sense? Thanks

Josh