Thanks Trex,
I am beginning to think it's some sort of "support" related thing that has failed.
I was told to make sure the differential supports were good, as that could be a problem. I do know that 200 lb/ft or torque is quite a bit of turning force, and it only makes sense that something related can wear over time, especially when pushed hard.
Any other ideas?
(BTW, car has 101,000 miles, original trans)
Thx!