I guess no one looked at the pic that comes up in the link I posted showing the back of two different mastercylinders with the different holes for seating the push rod----------this is an common issue of older cars, brake conversions and the MODERN auto parts store dealing with inexperienced people----------I would like to do a thread on brakes and master cylinders but have been advised not to expose myself to the liability of some one coming back and sueing me because they had an accident and had used the thread as a guide for doing there brakes-----------so I guess that I'll check out of this'un because he doesn't seem to want to follow much od any ones advise------