Robert.....all 1958 to 1960 2bbl and 4bbl thermostat housings are the same. Part #529219. Tri-Power outlets will not fit. Some later year 2bbl and 4bbl outlets may fit, but the orientation toward the radiator inlet (toward the driver side) may or may not be the same. You would need to check that out. I have also seen housings (usually chrome plated) sold in speed shops and auto parts stores that may fit, but again you must compare their size and orientation. Most thermostats are about the same diameter so that part shouldn't be a problem......John