What if I don't change my Master Cylinder on a disc conversion?

C130 Chief said

Also, pre-73 disk equipped cars generally had same sized reservoirs from the factory,

Click to expand...

Sorry but this is not true. Every disc brake car I've owned back to 1966 models, which is a lot, all have larger reservoirs for the disc. Never seen a factory disc brake car of any make that didn't have a lager reservoir of a common reservoir.