Technical 1929 Plymouth brake cylinder bore size ?

I am working on a 29 plymouth coupe that has 1 1/4" bore brake cylinders
on the front and rear. This bore seems to large to me. The replacement
cylinders are listed as 1 1/4 " also. Does anyone know what the stock bore
was on these?
Thanks for your help.
Dave

 

Hi Dave, I hope you get this! Thanks to Comcast, I lost your email address. I need some advice on rear springs for my '62 Vette. If you have my email can you drop me a note? THANKS, Don