Never used the word Thrust Bearing until I got the ‘35 Ford. I thought someone corrected me and said it’s called that when I said Throw out Bearing. It is what I used to call a throw out Bearing & still do on my 442
. With regard to my pilot bearing pressed into the FW it’s the Ball Bearing type. Still looks fine. If I have to pull the engine I inspect & replace all stuff u only see after Engines out.