Is this a common book?

[David_Hayward (RIP)]

Regrettably Fords used McKinnon-built transfer cases, especially in the 1940 Model year production, as Windsor Axle Plant was not equipped to build them, whereas the St Catherines plant had the benefit of GM licences. Of course the initial intention was that say Fords would say, supply cabs for both companies and GM other components. However this was abandoned as impractical pretty rapidly.