Old to B Bodies New to A Bodies

Hello to all. I am the proud new owner of a 71 Demon. I have dealt with several B Bodies over the years and am getting back into the Mopers after a few rough years. This is my first A Body and as I am learning there are definitely some differences. The car has had quarters, floors, and trunk replaced. Mini tubbed and had the frame tied. It started life as an H1B car but that is long gone. I plan on putting a 440 in as I have a couple around. I know I will definitely have some questions and will definitely appreciate help.