good idea. ALWAYS carry tools and jumper cables. everyone willing to give a jump, but no one ever carries the cables! as to the trans, did you open it up at all before you installed it? sounds like perhaps some bearings might be going. I had a 92 that when you lifted off throttle in 3rd, the car would drop to neutral. Could actually watch the shifter move about as well. turns out the bearing on the input shaft was toast, actually had come apart in the case so the gear assembly was just moving around