GOOD NEWS. . . . The PICTURE UPLOAD FUNCTION IS WORKING !!! The tech folks at the parent company have been able to remedy the issue. You can upload pictures once again. Thank you for your patience.
West bend became Chrysler in 66 A brief check of the generic service manual 66,67 perhaps more indicates the early Chryslers are identical to the West Bend.
Standard prop diameter is 10 3/8 on all models, 35 to 55 hp.standard pitch 45,50,55 is 12 1/2 though that would depend on the application.
The Chrysler Crew may be able to help with a prop.You could check ebay as well.