Update:

Old transmission came out easy peasy.
We looked right at the bushing in the back of the crank through the clutch hole and it looked spiffy, so we
decided the heck with the roller bearing, especially since the old transmission input shaft showed no damage.
In went the "new transmission", darn near as easily as the old one came out; it hung up a little right at about a
half inch left, but a little wrasslin' and it plunked right on home.
Everything reassembled, fluid topped off, jumped in it for a test drive and....
I got about 100 yards before all hell broke loose.

The thing started making a noise like a small block Chevy makes when it needs a LOT of shimming on the starter
motor (yeah, THAT noise) anytime the clutch was engaged. It would quit in 1st or 2nd with the clutch in; in 3rd,
it didn't matter if it was in or out. Pure death squeal.
I managed to get it back to the shop and up in the air it went again. Rechecked everything.
Finally, I got up in the car while the shop owner (who has rebuilt a bunch of transmissions in his time) traced the source
from below the car while I made it do it.
He said "transmission, 3-4 part."
I called Jamie Passon on the spot...
Jamie asks to hear the noise over the phone and says "catastrophic failure", whatever the hell that means.
We talked about the reverse detent retainer bolt (which was not tightened when the unit arrived, so we tightened it)
and he sounded 1)pissed off and 2)dubious of what I was telling him despite his hearing it with his own ears.
Said he'd send another one out "this week probably" and made sure to say "but if the next one does the same thing,
Ed,
that's on you."
Yeah, no **** Sherlock....
Results of the day were a nice ride back home on a rollback with a now crippled car ($$$), payment due to the shop
for their work this time (and next time if we do this when the next one arrives) and apparently I even have to pay freight
to get the warranty unit back to Jamie.
I'm exhausted, frozen and on the verge of packing it in.....