HELP NEEDED IDENTIFYING AUTO-LITE DISTRIBUTOR SHAFT

[PT81PlymouthPickup]

Anyone know how to verify Auto-Lite part numbers?  I purchased a distributor shaft that someone wrote on box with a marker #661711 which according the 1936-40 Dodge Trucks master parts catalog should be the correct one for my 1939 Plymouth pickup which is essentially the same as the 1939 Dodge TC. Anyhow, when I got my IGS-4103A distributor apart, this shaft was not the correct one. Using online a 1947 Auto-Lite Service Parts Catalog, I was able to locate a IGS-2025 RF shaft with governor which worked perfectly.

 

The oem box marked from the manufacturer as IGS 1025RB which I believe is the correct number for this distributor shaft without governor. Anyone know have access to, or know where to find the application for this shaft? It's perfect brand new condition. I'm hoping I might identify it, so I can pass it on to someone who might need it.

[billrigsby]

 

Plymouth 1938-39

Plymouth (Truck) 1938

 

[PT81PlymouthPickup]

1 hour ago, billrigsby said:

 

Plymouth 1938-39

Plymouth (Truck) 1938

 

Thanks! Very helpful! I wish they listed the shaft applications referenced by distributor numbers. The distributor listed in the 47 Autolite service catalog for the 1939 PT81 is IGS4103A-1  The one in my truck is IGS4103A without the dash-1? I think there might have been some discrepancies with the model year applications?