Which 727 do I have?

All torqueflites have a switch on the drives side right about the pan rail about mid way. This is the neutral saftey switch and backup light switch. Also It can be either a lockup or non-lockup. They made both that year. You can identify the lockup vs. the non-lockup easily by looking at the input shaft. It the input shaft has splines all the way to the end it's a non-lockup. If the front end of the input shaft is machined down like it was turned down in a lathe about 1/2" it's a lockup trans. I haven't had any experience with lockups so I don't know where the wire came out for the lockup control.