"In fairness, how many 55's still has original master cyl. and booster?"
I would think most 55's still have the original master cyl. and
booster as the Kelsey Hayes was a one year application.
Last time I checked the kit was $125.00
advertised in the WPC Club magazine. The cause of failure lies mostly in
the diaphragm in the booster. Some may say, the 56 power brake system
will replace the 55. I would not disagree but have no knowledge of that
being done.
Jim M.
1939 Custom Imperial Limousine C24