There was another small delay on getting the bearings from Gforce.
Then they showed up yesterday and BSP put the car together fast for me and I brought it home last night.
The 'whaa whaa whaa' sound is gone! Beautiful! Rich said that the internal diff rebuild took some of the noise away, but some was still there. The outer needle bearings got rid of the rest of the noise.
(If someone is on a very tight budget and my description matches the noise they have, and they confirm with stethoscope that the noise is coming from the area of the pumpkin, then you could try replacing just the outer needle bearings first and see where you're at, as the diff doesn't have to be taken apart to do so so its relatively low cost. This is just my personal opinion.)
My total came to just shy of a thousand.
Rich and gang were great to work with.
Being without your GTO for 2 months stinks, it was nice to fire it up this morning!