Part # for Disc/drum master cyl. with 1" bore?

[Greasey Harley]

I I just did a front disc conversion on my '68 c10 and really don't want power brakes.
Anybody happen to know a good part number for a Disc/Drum master with a 1.00" bore?
I have read that 71/72 c10s came Non-power disc/drum brakes, but I haven't come across a part number..
I can only find (and have installed) a 1.025' bore master. I have tried multiple parts houses. I can drive it, but the pedal is pretty darn stiff. I don't think the wife would like driving it much.
Not really into Brembo, Willwood or Corvette master cyls. If I can't find the correct one, I will probably have to convert to power, that would be a bummer.
Just want a stock looking, non power setup.

Somebody suggested a 1" bore master off a 1970 Nova, that part is available from Napa, I don't know if that will work though? anybody know if that's an option?

Thanks for any help.
-Russ