Two people said you need a manual brake pushrod, or an adjustable pushrod for manual brake applications. I’ll be the third. This is all you need.
if your car had disc brakes before which I think you said it did, you can use the same master you have now Providing it works and doesn’t leak. Being a 1974 it likely already has a 15/16” bore master which is fine for the conversion.
if you need a new master any reason in particular you wouldn’t want the aluminum 2 post master? They Never rust and don’t look like crap over time.
