My 1940 champion 6 cylinder is supposed to have a Autolite IGC-4801 distributor, but actually has a Autolite IGC-4805 a couple of years newer. My question is would a Autolite IAT-4001 or IAT-4010 out of the 1950 or 1954 be a straight swap on the 169? Any advise would be appreciated.
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