I can't find a choke thermostat to save my life. The application is a 1967 Camaro 327 210HP with a Dual Jet divorced choke. Was the thermostat spring in this application used in any other application? I can't understand why I can't find a listing for it. Was it also used in 4bbl applications, because I see choke thermostats for 4bbls all over the place.