Road Toads (1960-62 A bodies) are out there; for mechanical simplicity, your best bet may be a 1962 model since virtually all of its mechanical componentry is identical (or very close) to the 1963-76 Darts and Valiants.
http://www.1962valiants.com/ is an excellent source of info and parts for the above cars. They're based in Australia but apparently there are quite a few survivors Down Under.
http://www.1962valiants.com/ is an excellent source of info and parts for the above cars. They're based in Australia but apparently there are quite a few survivors Down Under.