1967 Dart Radio

I'd like to develop a conversion job that does not destroy the TRF design of these original AM classics.
I support FM conversions and alternate audio options, but cringe at the method of and results of the AM after "conversion".
There must be some way to use the full original AM tuning section for its many advantages, simply feeding to an alternate audio input,
which is what I plan when I get forced into a "new" car.