angles on driveshaft / u-Joints stock leafsprings with caltracs

Hi,
never adjusted this before. Can you guide me how and where to measure. And what angle is where the optimum? Can I expect movements at the pinion upwards with those caltracs? ( dragstrip a few times a year with Slicks - 12.xx second manual car ) I read a lot in the net but it is kinda contrversy. especially with caltracs. tranny should show up from ground or driveshaft angle? and pinion down 3 degrees from driveshaft angle? Seems me stupid german Needs a step by step instruction.. :)