I have a Muncie overdrive (three speed) that I plan to install in my 62 1/2 ton chevy truck. Two questions-where can I get a gasket set for it and can't I hook up a switch to manually engage the overdrive since I don't have all the wiring to connect to the carb? Someone said that I will need a cable to go in and out of one part of the unit and a simple switch on the dash to engage the selonoid? Any suggestions? The trans came out of a Studebaker .
