Welcome to the forum. I have owned two 1970 RT/SE Challengers back in the day. One was a 383 and the other was my high-school car, a loaded 440 car.....(Had a lot of fun with that one!) Not sure about the "transducer" for a cruise control is all about, but the best thing you could do, is invest in a shop manual (not one of the "repair Manuals" you find at auto parts stores, but a real factory shop manual. They are available through Year One, and others....that way you can learn more about your Challenger. As for the clock, check with vendors in one of the major Mopar Mag's that can convert your clock with modern inter workings....that way it will actually work....