i have a few questions about my new 331 hemi. It came out of a 54 newyorker. 4barrel and no trans housing. I'm going to put it in my 31 ford and I plan on using a 727. As I'm shopping around I notice that some say big block or small block 727. Is hemi considerd a big block? Which 727 should I look for? I understand I will an adapter.