Source for replacement diaphragm for vacuum pump?

TXDart said

If you were trying to get your car home and broke...as temporary fix...
What you got to lose,your fringing brakes or your life.

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Yeah... You're right Martin, as usual.
It might hold, but for how long?
I think I'm just going to go manual.
If anybody has a line on a factory A-body pushrod for Kelsey-Hayes disc/drum combo, please pm me.
Thanks!