@bigmal Im sorting something similar with my SOT 3 link, but I have a TKO. I have yet to try it, but since I dont have a garage, the rain is keeping me at bay.
but to piggy back of of Det, and Im sure you have done this, put the car on an even surface with jacks, so it can mimic the car is on full weight on tires, measure the transmission tailend with an inclinometer or app on your phone, measure how many degrees the transmission tail is, measure the drive shaft angle and finally pinion angle.
at least for my set up, SOT recommended my car to be around, 3-4 degrees Transmission down and 3-4 degrees pinion up. of course have the transmission and pinion be centered at 0 degrees should cause no vibration.