It's the "baby" version of my 42-390 console! There are converters for pre war to post war FM, but I'd just use an AM transmitter or inject audio at the volume pot. That's how I have my Pilot tuner hooked up anyways. The original chassis in my 42-390 was a basket case so I bought a 42-380 chassis and put it in the box. The 380 has an extra shortwave/police band instead of pre-war FM.
As a random thought do you happen to have any old 49mhz walkie talkies around? Might be good for a transmitter