Master Cylinder Pushrod Retainer Question

X You suggest that the Boot and Retainer should NOT be used in place of the temporary single bolt retainer tab shipped with the master cylinder. So you would be advocating it's OK for dirt to get in to the piston bore along with condensation and seepage? Not really sure why you would go that route!
I didn't comment on the boot or it's retainer. The tiny sheet metal retainer isn't to be removed and/or replaced by the boot retainer. That tiny sheet metal retainer is the only thing holding piston and return spring in the bore. I don't know if the boots plate would or not. My 67 has the one sheet metal tab and the boot. That 2 hole plate is not present. Good luck to all.