Throw out bearing question

By any chance was engine running at the time you checked this out? Could be with engine running maybe see another problem with the clutch fingers. And another question is disc in correctly? Just trying to cover all bases.
I used an old input shaft to install it I torqued all the bolts flywheel side is facing flywheel. I think I covered it all. Where can I get a quality bearing I don’t want some China garbage and is there only one for small blocks? Hays shows a few diameter ones