what pinion angle?

Hold a 1/2 inch drive socket up against the bearing on the U joint (use one just small enough to fit without wiggling) with the drive shaft rotated so it is facing down. If the car is level you can just hold the angle finder against it. Then measure the angle of the drive shaft. Actually it doesn't matter if the car is level, just subtract one from the other. It is the relationship between the driveshaft and the rear and the transmission that you are measuring.