They all use a balancer/damper but 67 did not originally use the rubber ring type but over the years who knows what has been done to the motor. It is the round thing with the timing mark on it and bolts on to the front of the crank. Just do a search and you will find some good pictures of it to help you understand. As far as the trans. I've done many on my back without a lift and with everything being new and clean will be a breeze. Whatever bellhousing bolts you can't reach from the top just use a long half inch drive extension and a impact universal from underneath. Before you pull anything though you need to talk to the shop who did the trans and find out the story with the converter.