master cylinder push rod

I'll pull one tomorrow. The end is a ball fit that "pops in" to the nylon plunger in the master cylinder. I read somewhere that you need a disc brake master cylinder, but I am not certain. The rod is the same on all manual brake A bodies from the mid 60's to 76
Greg, that master cylinder p/n I listed is a disc brake master cylinder, so I should be good there. You pull the part and I'll buy it. Thanks, Steve
BTW: thanks to everyone's responses. Looks like this site is a great resource! Much appreciated.