I had a bad ignition switch in my 52, so I took it apart and cleaned and sanded the contacts, good as new.
It is a little tricky to get apart, but with some patience and care it can be done. Not sure how different your switch is though, but worth a look to see if it can be fixed.

Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-