I may be wrong, but I just got a kit for a 42 Ford COE and it looks exactly the same as my 30 Chevy and 53 Dodge. Macsautoparts.com has them for a mere $19.50. Part # 11A-9349 The diaphragm is usually the only part that needs changing and the rest go back in the bag and sit on the shelf... They also have the earlier diaphragm without the metal part if you need that.
Good luck!
