Just the plug that connects the back up lights. You might want to leave it on and cut the wires as far as possible from the transmission,so you can splice it into your wiring harness. Also,I always grab as much of the related stuff as I can get away with-there's always something you later wish you'd taken while you were there.Later,if you don't use it in your install you can sell it or give/throw it away.
The driveline should just slip out,so if the engine's already gone,you can just pull the tranny forward to free it. Best to snag the driveline too though.You'll probably need at least the yoke from it.
Speed
