As far as I know, you don't need any other parts for the transmission swap, but I am not too sure. I had a 72' 240z with a 5 speed and all I switched was the transmission. I worked fine, but the gear ratio might be off. Other than that I think a new transmission is all you need. But I had a friend who replaced the transmission, driveshaft, and rear differential. It was a 73 240z and it felt the same too me. Sorry if I couldn't help you. Hopefully some else can tell you what they have done. Good Luck on your project Z!