Help? Brake Master Cylinder ID? Year?

The brakes on the roadster p/u were a little soft so I had a rebuild kit from NAPA and it seems to be the wrong one...........could anyone ID the year of this Master Cylinder? I am hoping to make the drags or just clean this one up and go for it and not run down the track and drive off into the "Corn Field". Thanks for your help.









Chris Nelson
Kansas

Hamb Drags or Bust

 

looks like a 61 63 chevy but I do not remember em having the bleeder...maybe same year truck?

 

Looks like a good excuse to convert it to a dual-chamber, to me. Anyone have an old Wagner catalog to look that up in?

 

Yea, I know.........but, I do not feel like remounting it with a double hole and trying to make it to the drags on 10 hour work days...........

 

Thanks Kenny........