Hey
@Uncle Gump, tried what you said but didn't notice any difference.
However, the symptom has changed to "pretty quiet while its sitting there, loud as hell when I touch the clutch pedal."
While addressing some leaks and rust stuff I tore out all the old carpet and took the rubber boot off the shifter in the cab, and then it became extremely clear the noise is coming precisely from the bell housing, so I figure it's got to be a bearing.
I've almost assembled all my tools to put in a clutch kit I got, so I'll update with how that goes.
I'm sure it's gonna confuse the hell out of me though so I'll probably make a thread of the process so I can post pics and ask questions.