65 Barracuda 187 code!!!
first you have to figure out what year the trans is,,,that may be why 2 terminals are broken off the switch,,on the early,,,and i think 1966 and earlier or 65 and earlier.,,the trans only used a single connection switch,,that was for netural saftey,,,the reverse light switch was on the shifter in the console,,,, later trans used 3 prong switch,,, back up lights and netrual saftey all in one,,,since u have a netrual swtich on the shifter,,just wire that up,,,but you wont have reverse lights i dont think,,you can get a switch like the one on the shifter and find way to mount it so it connects when in reverse,,,cant be to hard