Daves69 Thank you. I found a similar fixture from Precision Machine. Let me know if I have it set up correctly. Maybe in the next few days I'll have some time to take the measurements.
That appears to be the correct way to set-up one of the measurements. But, you must also measure insure that the face of the bell housing is parallel with the face of flywheel, so the transmission is both square with the crank centerline and the transmission shaft centerline is in alignment with the crankshaft centerline. I don't see the picture of the set-up to check the squareness of the transmission mounting face.
