The roller pilot bearings aren't necessary for a muncie since that trans uses a ball bearing for the input shaft. Those roller pilot bearings become necessary on setups like a TKO for example because they use a taper input bearing that can not tolerate a bunch of side to side movement.
I do see roller pilot bearings quite frequently installed in muncie applications though. Seems like many clutch kits just come with it automatically these days.

I'm not sure if this was mentioned, but does the car have a roller camshaft in it? I've had a roller lifter fail (on more than one occasion) and they at first create a chirp that turns into a squeak or squeal. What throws it off is that the sound will transmit right through the front timing cover from the cam button and make it sound like a water pump squeaking.

Just a thought.

Yes it does...

Ugh...

I hate to say it but might want to pull the intake and have a peek at the cam lobes.

If a wheel has locked up it'll score the lobe pretty quickly and you'll be able to see which one is the culprit, eventually eating it down until the arms of the lifter that holds the wheel pin contacts the outer edges of the cam lobe. Makes a squeak or squeal sound that is hard to locate. Even had one where the engine was still running fine (hydraulic roller), but was making the noise. Had a locked up roller lifter and was eating into the lobe. I can only assume it was still running fine because the hydraulic lifter was still taking up the extra lash it was creating for itself. It only ran for a few minutes after the squeal started.

I really hope that's not the issue but I've seen this more than once.

I really hope it's not also but it is something I hadn't considered. I'm going to double check the noise is absent with the fan belt off again and go from there. Thank you.

Does it have a thermostatically driven clutch fan? Is the clutch hub bearing on that, bad?

Steve, I took the fan clutch off and used a spacer to eliminate that as a possibility.

Here's a squeak I had in my Camino 3 years ago.Would start once the engine warmed up a bit.It really challenged me.I used a stethoscope to track the noice down and the old long screw driver trick.The sound seemed to travel.Took off all the belts...still there.Changed the water pump and distributor...still there.I was at my whits end.One day got angry and decided to take the Camino on a long highway ride at 70-75 MPH's.Squeak went away to never be heard again.Here's a YouTube video.Check it out and see if it's a similar noise. https://youtube.com/watch?=0Hx802HyWs&feature=share

For what this is worth ... In the past I put together a 427 BBC and installed in a 72' two wheel drive Blazer with a 700R4. Ran just fine and later on when the engine warmed up it had a slight "squeal" in the front of the engine. I used a stethoscope and it seemed like the noise was coming from behind the harmonic balancer. Removed the balancer and the chrome timing chain cover. The area where the seal is installed was not center correctly and the balancer was slightly contacting the metal surface. Installed a factory cover -- noise gone. Lesson learned ... don't used cheap crap from across the pound. :no::no::no:

Just noticed my link on YouTube isn't working.The video is "1964 El Camino engine squeak" if you're interested.