Pinion Angle

So I'm ready to weld the new perches onto the 8 3/4. The rearend is under the car and bolted in but the perches are not welded to the housing. The car is on all four tires and sitting at ride height.

Also, I don't have a driveline. All of the searches show a measurement off the driveline.

I got my protractor out and took some measurements. The tranmission is 2.5 degrees down being measured at the face of the output shaft. The rearend is 4.5 degrees to 5 degrees down too being measured on the face of the yoke.


My question is where should I put the rearend before I weld up the perches? Keeping in mind its on stock suspension, rubber bushings, low horsepower 360/auto street cruiser.