Hi there, r.swanson
I would recommend that you find a Service Manual for your year. This will give you detailed info and photos of what you are trying to do.
Try posting a "want ad" for one on the Classifieds. The Classifieds can be reached by the link at the top of this page, and you log in there with the same user name and password you created to get on these forums.
Also, starting a new thread with a title like "Need info on tanks for '71 Ambassador" can get you other suggestions on what you want to know and need to do. This thread is old and abandoned, and the title will mislead readers, so posting here is not a good use of your time.
If it's to be, it's up to me.