Here is what the American Classic Parts told me.
"You might want to sit down for this Martin. Napa’s parts number was 14484 but their price in 2006 was $450 retail and I don’t know if they still sell it. I have one on our shelf that I can let go for $175 which is what we paid for it. They now still sell it for $205.80 NMC M14484.
However having said that we sell reproductions BR0103 from don’t know where for $99.99 that take a 7/16 x 24 fitting.
The Stove bolt guys should have told you that the 52-55 master cylinders works BR0104 and the only difference is the fitting for the brake line which takes a 1/2 x 20 Male.
We also sell the conversion fitting. BR4404.
Hope this helps but if it doesn’t still say nice things about us. Please. CM.
www.americanclassic.com"
